Editorial Note: Led by our Editor Dr Mike Hankins, From Balloons to Drones produces a monthly podcast that provides an outlet for the presentation and evaluation of air power scholarship, the exploration of historical topics and ideas, and provides a way to reach out to both new scholars and the general public. You can find our Soundcloud channel here. You can also find our podcast on Apple Podcasts and Google Podcasts.
The recent publication of Malcolm Gladwell’s The Bomber Mafia has generated much interest in the topic of strategic bombing during the Second World War. In our latest podcast episode, three of the editors at From Balloons to Drones, Dr Mike Hankins, Dr Brian Laslie, and Dr Luke Truxal, discuss the book and go beyond it to talk about various issues related to bombing during the Second World War.
Dr Michael Hankins is the Curator of US Air Force History at the Smithsonian National Air and Space Museum. He is a former Professor of Strategy at the USAF Air Command and Staff College eSchool, and former Instructor of Military History at the U.S. Air Force Academy. He earned his PhD from Kansas State University in 2018 with his dissertation, ‘The Cult of the Lightweight Fighter: Culture and Technology in the U.S. Air Force, 1964-1991.’ He completed his master’s thesis at the University of North Texas in 2013, titled ‘The Phantom Menace: The F-4 in Air-to-Air Combat in the Vietnam War.’ He has a web page here and can be found on Twitter at @hankinstien.
Dr Brian Laslie is a US Air Force Historian and currently the Command Historian at the USAF Academy. A 2001 graduate of The Citadel and a historian of air power studies, he received his Masters’ from Auburn University Montgomery in 2006 and his PhD from Kansas State University in 2013. He is the author of three books with his most recent being Air Power’s Lost Cause: The American Air Wars of Vietnam (2021). His first book,The Air Force Way of War (2015) was selected for the Chief of Staff of the Air Force’s 2016 professional reading list and the 2017 RAF Chief of the Air Staff’s reading list. He can be found on Twitter at @BrianLaslie.
Dr Luke Truxal is an adjunct at Columbia State Community College in Tennessee. He completed his PhD in 2018 from the University of North Texas with his dissertation ‘Command Unity and the Air War Against Germany.’ His previous publications include ‘Bombing the Romanian Rail Network,’ in the Spring 2018 issue of Air Power History. He has also written ‘The Politics of Operational Planning: Ira Eaker and the Combined Bomber Offensive in 1943’ in the Journal of Military Aviation History. Truxal is currently researching the effectiveness of joint air operations between the Allied air forces in the Second World War. He can be reached on Twitter at @Luke_Truxal.
Header image: Boeing B-29 Superfortresses drop bombs over Rangoon, Burma in 1945. The nearest aircraft is a B-29-25-BA of the 871st Bomb Squadron, 497th Bomb Group, 20th Air Force. (Source: Wikimedia)
Let us not be zealots. Let us not plunge thoughtlessly from the old and known to the new and untried. Let us not claim that the airplane has outmoded all other machines of war. Rather, let us be content with an evident truth: The air force has introduced a new and different means of waging war. (p. 85)
As Hansell highlighted, air power revolutionised war by allowing the focusing of force on the enemy’s vulnerable areas without having to meet its forces ‘in the field’. There are now a few essential books on strategic bombardment that provide historical depth to its development primarily during the Second World War. Works such as Bombers and the Bombed – Allied Air War Over Europe by Richard Overy, Among the Dead Cities by A.C. Grayling, and Air Power and Warfare – A Century of Theory and History by Tami Davis Biddle provide a rich contextual background within which Phil Haun’s compilation sits.
Phil Haun has compiled the lectures of the Air Corps Tactical School (ACTS) as a means of capturing some of the primary sources that led to the development of the American approach to strategic bombardment. The theories focused specifically on high altitude daylight precision bombing (HADPB). The lectures in Haun’s work were developed during the formative period of air power, following on from the landmark work, Command of the Air, by Giulio Douhet, which advocated for the use of air power for strategic bombardment of civilian populations and cities on the assumption that it would destroy morale and force populations to capitulate. Douhet’s work focused on the importance of gaining command of the air and the direction of air power to particular targets.
What makes Haun’s compilation compelling, and its most significant contribution to the study of air power is that it preserves nascent thinking about how to put novel theories into practice. The work also highlights the perennial struggle between the development of strategic air power – to ostensibly use air power as a means to victory on its own – or the development of air power capabilities that primarily support naval and land forces. Although the technology has developed beyond what the authors of these lectures could have imagined, their ideas and arguments have a direct link and relevance to conceptions of strategic strike, and bombardment in depth. For example, Major – later General – Muir Fairchild’s discussion of the ‘National Economic Structure’ (pp. 140-64) in his 5 April 1939 lecture to the ACTS finds resonance in the targeting of Daesh oil and cash stores during Operation INHERENT RESOLVE as a means to removing the economic support to its military operations in Iraq and Syria. This compilation of lectures is recommended for military professionals, and students of military history and air power, who want access to primary sources that demonstrate the fundamental ideas on strategic bombardment and how air power could be used independently as a means of forcing the rapid capitulation of the enemy.
The book is comprised of several lectures delivered at ACTS at Maxwell Field, Alabama, between 1936 and 1940, and demonstrates the development of American logic and assumptions regarding the best use of a new capability – aerial bombardment – to achieve strategic outcomes. In his ‘Notes on the Text’ (pp. xv-xvi), Haun explained the criteria he used to select the ten lectures published in the book. First, the lectures were the most quoted in subsequent publications on U.S. strategic bombardment and were therefore considered by Haun to be the most important. Second, the lectures demonstrated the most mature thinking on the theory of American strategic bombing before the entry of the United States into the Second World War in December 1941. Third, these lectures were delivered to the largest number of students at ACTS between 1938 and 1941. Fourth, the students mentioned above became the officers who planned and conducted bombardment in Germany and Japan. Fifth, there were the best-preserved lectures. Finally, and pragmatically, not all ACTS lectures could be physically included in a single volume work.
The lectures were delivered by officers who were experienced aviators, and some had tertiary qualifications, though only a few had combat experience. Only a few, such as Major – later Lieutenant-General – Harold George and Fairchild, had completed some professional military education. This does not distract from the utility of the lectures presented here, as they demonstrate a practitioner’s approach to wrestling with the dilemma of how to maximise the utility of a new weapon of war, and to avoid the protracted stalemate on the Western Front only 20 years before the time these lectures were written.
Haun’s introductory sections to the book provide an overview of the development of air power theory during the inter-war period. Aside from Douhet, the most important ideas that influenced the development of air power theory in the United Kingdom and the United States can be traced to a few individuals. Major-General Hugh Trenchard became the first Chief of the Air Staff of the newly established Royal Air Force in 1918. He influenced the development of British strategic bombardment theory, principally reference to attacking the enemy’s morale, which was not as blunt as Douhet’s advocacy for the bombing of the civilian population. Brigadier General William ‘Billy’ Mitchell proposed the creation of an independent air service alongside his ideas on strategic bombardment that focused on the selection of targets that would most quickly degrade the enemy’s capacity to fight and therefore shorten the war. The inter-war theorists minimised discussion about the effect of bombardment on the civilian population, with the practice of bombardment of cities by both sides in the Second World War. This culminated in dropping of the atomic bomb on Nagasaki and Hiroshima in 1945. The effectiveness of strategic bombardment of cities remains a subject of enduring controversy.
The first two chapters provide an elucidation of the understanding of strategy, air power, and warfare as held by the lecturers. The enduring nature of war is discussed or mentioned in these chapters, such as Captain – later Major General – Haywood Hansell’s statement that:
War is a furtherance of national policy by violence. Since nations find the real fulfilment of their policies in peace, the real object of war is not the continuance of violence, but the establishment of a satisfactory peace.’ (p. 75)
The authors of these lectures also grappled with the industrialised nature of warfare that was so grimly demonstrated on the Western Front from 1914 to 1918. George, in ‘An Inquiry into the Subject of “War”,’ noted what he perceived to be the increased vulnerability of industrialised societies, due to their:
[s]usceptibility to defeat by the interruption of this economic web […] connected therewith is the industrial fabric which is absolutely essential for modern war. (p. 43)
This theme is continued and further examined by Fairchild’s lectures in chapters five and six.
Perhaps the least relevant lectures are those in chapter three, which are very technical and limited to the capabilities available at the time the lectures were written. Lieutenant – later Brigadier General – Kenneth Walker’s ‘Driving Home the Bombardment Attack’ discussed the tactics and formations that he considered the most effective for the bomber force to penetrate enemy air defence. They represent rudimentary ideas that were yet to be tested. Haun commented that Walker’s ideas proved to be right in that bomber formations successfully penetrated air defences, yet only focused on single raids rather than the cumulative effect of aerial attacks over time (p. 98). Major Frederick Hopkins’ lecture, ‘Tactical Offense and Tactical Defense’ considered the attrition rate of the bomber force and consequent ability to conduct offensive bomber operations. These lectures discuss the tactical viability of the bomber force and its impact on successful offensive bombing operations. However, they did not account for the development of radar, which had a dramatic impact on the effectiveness of bombardment, and was being developed at the time of their writing.
Captain – later General – Laurence Kuter’s lecture on the ‘Practical Bombing Probabilities’ considered several factors that determined the accuracy of delivery and effectiveness of bombardment. Kuter’s lecture was delivered in 1939 while the Norden bombsight continued in its development. Although the bombsight would not be used until the war, the concepts and ideas discussed by Kuter represented necessary rudimentary steps in thinking about bombardment accuracy. From the ‘Practical Bombing Probabilities Problem,’ we can draw a direct link to the development of elaborate weapons effects information, and other considerations that affect bombing accuracy. The factors that determine ‘how many bombs it takes to hit and sink a battleship’ or any other target are now answered by software such as the Joint Air-to-Surface Weaponeering System, and databases such as the Joint Munitions Effectiveness Manual. These targeting tools are essential for the planning of strike missions and are directed towards maximising accuracy while ensuring a high ‘probability of kill’ (Pk).
Chapters five, six and seven covers the theories of Fairchild are perhaps the most useful lectures as they are still relevant today. Fairchild’s work provided insight into the dilemma of how to effectively use air power for strategic effect versus using air forces to support land and naval forces. As Haun highlighted, with the development of the Norden bombsight and the B-17 Flying Fortress, the next issue was to determine what targets could be struck to most effectively and rapidly result in victory (p. 139). Fairchild’s work is based on studies by Donald Wilson, who provided an analysis of America’s infrastructure and its vulnerability to attack because U.S. isolationism at the time prevented the collection of intelligence about the Germans and Japanese.
One of the more interesting aspects of Fairchild’s lecture ‘National Economic Structure’ (pp. 140-64) is his discussion of the effectiveness of attacking an enemy population’s morale versus the enemy’s war-making capacity. He concluded that because of the adaptability of ‘man’ the fear initially caused by strategic bombardment to becomes ineffective over time. This was certainly borne out by the evident ‘Blitz Spirit’ and resolve within British society as the result of bombardment by the Luftwaffe in 1941. Fairchild went on to state that a more humane – and certainly consistent with the laws of war – approach was to understand the target as a system. He said:
Complete information concerning the targets that comprise this objective is available and should be gathered during peace. Only by careful analysis – by painstaking investigation, will it be possible to select the line of action that will most efficiently and effectively accomplish our purpose, and provide the correct employment of the air force during war. It is a study for the economist – the statistician – the technical expert – rather than for the soldier. (p. 146)
This is precisely the function of ‘target systems analysis’ today, which is essential for understanding the vulnerabilities of a system in order to identify the components that can be affected to destroy or degrade the operation of the system. The United States Strategic Bombing Survey (USSBS) acknowledged that the factors of production identified by Fairchild – transportation, petroleum refineries, and electrical power stations – were indeed critical vulnerabilities in the German economy (p. 178).
The maturity of such a system was perhaps most evident in the command and control established to plan and execute the air war against Iraq in the 1991 Gulf War. Using the small planning cell established during the Cold War called ‘Checkmate’, Colonel John Warden III developed a plan to use air power to defeat Iraq by targeting it’s ‘centres of gravity’. This included obtaining control of the air by destroying Iraq’s air defences to maximise freedom of manoeuvre by the U.S. and allied air forces to strike at command and control nodes, transportation, power and communications.
Haun’s compilation of lectures certainly has contemporary utility by providing a good background to some of the ideas and theories that form the foundation of the practice of contemporary strategic strike. However, the book is limited by its focus on a very particular part of the development of U.S. strategic bombardment theory. Consequently, Haun’s work is a point in time reference that must be read alongside other works mentioned previously, and also with the reports of the United States Strategic Bombing Survey to provide a rich context and anchor for this work.
As Eliot Cohen once argued:
Air power is an unusually seductive form of military strength, in part because, like modern courtship, it appears to offer gratification without commitment.
Air power has provided nations with the ability to coerce and deter others from acting in particular ways. Haun’s work ends with a summary of the perpetual struggle between the apportionment of air power resources towards strategic strike or to support other forces. The development of exquisite multi-role capabilities has alleviated the need to choose between these broad air power roles. Air power has also allowed nations to take swift and decisive action against others in a manner that does not commit it to long term ‘boots on the ground’, as Cohen’s words highlighted. The 1991 Gulf War demonstrated the effectiveness of strategic bombardment when planned and synchronised with the wider joint and combined campaign. So successful was the use of air power in the 1991 Gulf War, that it prompted the authors of Military Lessons of the Gulf War to proclaim:
[t]he inescapable conclusion […] that air power virtually brought Iraq to its knees, and the air war showed that air power may be enough to win some conflicts.
The use of air power, however, must be much more discerning. In the information age, the simple targeting of physical infrastructure and systems are no longer solely effective. The prolonged and ongoing wars in Afghanistan and Iraq have perhaps demonstrated the limitations of the kinetic solutions offered by strategic bombardment. Ideologies that fuelled these conflicts cannot be simply ‘bombed’ into submission. The main effort is no longer necessarily fought with the bomber or fighter force, but rather in the memes and interactions on social media. Perhaps the next evolution is to incorporate some ‘axiological targeting’ considerations – which requires understanding the human population as a system, including understanding what is of value to them.
Relative to the conduct of war by land or sea, the use of the air for warfare is a little over one hundred years old. The utility of strategic strike continues to evolve and will present more opportunities and challenges. Many of the ideas developed and taught at ACTS lie at the foundation of the theories and practices in place today and form a humble yet essential contribution to the evolution of air power theory.
Group Captain Jo Brick is a Legal Officer in the Royal Australian Air Force. She is currently the Chief of Staff, Australian Defence College. She has served on a number of operational and staff appointments from the tactical to the strategic levels of the Australian Defence Force. Group Captain Brick is a graduate of the Australian Command and Staff Course. She holds a Master of International Security Studies (Deakin University), a Master of Laws (Australian National University) and a Master (Advanced) of Military and Defence Studies (Honours) (Australian National University). She is a Member of the Military Writers Guild, an Associate Editor for The Strategy Bridge, and an Editor for The Central Blue. She can be found on Twitter at @clausewitzrocks.
Header Image: Austin Hall at Maxwell AFB. Austin Hall was the home of the Air Corps Tactical School before the Second World War. (Source: Wikimedia)
 Tom Clancy, with General Chuck Horner (ret’d), Every Man a Tiger – The Gulf War Air Campaign (New York: Berkley Book, 2000), pp. 256-7. See also Thomas A. Kearney and Eliot A. Cohen. Gulf War Air Power Survey – Summary Report, 1993.
In 2020, From Balloons to Drones will run a series of articles that examine the use and development of air strikes from the earliest use of air power through to today.
The use of air power to achieve an effect on the ground and at sea remains controversial. For example, with regards to strategic bombing, Robert Pape argued in Bombing to Win that it ‘did not work’ as a military strategy. Moreover, since the inception of air power, there have been ongoing legal and ethical debates about the use of air strikes in various spheres of military activity. As such, From Balloons to Drones is seeking submissions for a series of articles that examine the varied use of air strikes, both kinetic and non-kinetic, at the tactical, operational and strategic levels of war. Themes to be explored might include, but are not limited to:
Strategy, Theory and Doctrine| Organisation and Policy | Roles
Operations – Kinetic and Non-Kinetic | Tactics, Training and Procedures
Strategic and Operational Effect | Technological Developments
Culture | Ethical and Moral Issues
National, International and Transnational Experiences
We are looking for articles of c. 3,000 words, though we will accept larger pieces and we reserve the right to publish them in parts. We welcome and encourage submissions from academics, policymakers, service personnel, and relevant professionals. We also welcome submissions written from diverse academic disciplines.
We plan to begin running the series in January 2020, and it will continue for as long as we receive potential contributions. We will also be looking at publishing extended versions of selected articles in an edited volume.
Submissions should be submitted in Word format and emailed to the address below with ‘SUBMISSION – Bombing to Win Revisited’ in the subject line. Also, please include a 50-100-word biography with your submission. Footnotes can be used, and please be careful to explain any jargon. However, if you are not sure if your idea fits our requirements, then please email us with ‘POTENTIAL SUBMISSION – Bombing to Win Revisited’ in the subject line to discuss.
Header Image: B-52Ds from the Strategic Air Command line up for takeoff as they prepare for strikes over Hanoi and Haiphong, North Vietnam, during Operation LINEBACKER. (Source: National Museum of the USAF)
Allied air campaigns against Axis petroleum have dominated the discussion of the bombing of Romania during the Second World War. Less exists in the current scholarship regarding assaults on targets other than oil such as attacks against railways, airfields, and the aerial mining of the Danube River. One aspect of the American bombing campaign against Romania that has not received enough attention is the attacks against Romanian refugees during the First Iasi-Kishinev Offensive from 8 April to 6 June 1944. In the spring of 1944, the Allies realised that exploiting the Romanian refugee crisis aided the Red Army’s advance into the Balkans. As a result, the Mediterranean Allied Air Forces (MAAF), under the command of Lieutenant General Ira Eaker, identified a series of crucial transportation targets that had the greatest potential to inflame the refugee crisis. Throughout April and May of 1944, the MAAF bombed key transportation targets that included rail stations and bridges to prevent refugees from escaping Romania. The Allies hoped the influx of refugees would impede the movement of Axis forces and supplies to the front lines throughout the First Iasi-Kishinev Offensive. While further research is needed to ascertain the full effects of the bombing on refugee targets, preliminary evidence shows that attacks succeeded. For example, during the Second Iasi-Kishinev on 20 August 1944, Romanian troops had to use the roads to retreat because rail centres could not handle civilian and military rail traffic. This indicated that at some level, the attacks against Romanian refugees had the desired effect.
On 8 April 1944 the Red Army’s Second Ukrainian Front, under the command of Field Marshal Ivan Konev, advanced towards Iasi, Romania. Soviet forces encountered the Romanian Fourth Army and the German Eighth Army under the command of General Mikhail Racovita and Field Marshal Otto Wöehler. Initially, the Russians gained ground at Tirgu Frumos, but a German counterattack repulsed the Soviet advance. Konev tried to resume his offensive with an attack on Podu Iloaie, but his forces were once again stalled by a desperate defence made by the Axis forces. At this point, Konev directed his left wing forward toward the city of Kishinev, which was defended by the German Sixth Army under the command of Field Marshal Karl-Adolf Hollidt. The fighting around Kishinev, much like the fighting around Iasi, saw limited Soviet success and ended with a well-coordinated German counterattack that repulsed the Soviets.
As the military situation on the Eastern Front deteriorated for Axis forces, refugees flooded into the interior of Romania as they fled the advance of the Red Army. The Soviets posed a significant threat to Axis civilians living in Romania: in 1945, they deported 70,000 to 97,762 people living in Romania into forced labour camps. The majority of the refugees were Romanians fleeing the Soviet advance in Moldova and Bessarabia. In early April 1944, the Romanian Fourth Army retreated into Moldova. Roads became crowded with refugees who fled the advance of the Red Army, which impeded the retreat of the Romanian Fourth Army. Additionally, Racovita encouraged civilians within six kilometres of his sector to evacuate. In Bessarabia alone, 82,580 Romanians fled the oncoming Soviet advance during the spring of 1944. This created a flood of refugees that placed strain on Prime Minister Ion Antonescu’s fascist government.
Supporting the Soviets
The Second Ukrainian Front’s advance toward Bessarabia provided the MAAF with the chance to assist the Soviets. On 21 March 1944 the Royal Air Force’s Chief of the Air Staff, Air Chief Marshal Sir Charles Portal, informed the commander of the United States Strategic Air Forces in Europe, Lieutenant General Carl Spaatz, that bombing Bucharest must become a top priority in light of the reports of the deterioration of the Romanian rail system. The following day, Portal notified Spaatz that he was authorised to bomb the rail lines at Ploesti only. Furthermore, Portal emphasised that attacks should focus on transportation target because the Soviets had advanced into Romania. On 23 March, Spaatz told the commander of the United States Army Air Forces, General Henry H. Arnold, that he intended to prioritise air attacks on Romania soon. He said:
It is of crucial importance to the situation on the Eastern Front and in Romania to act immediately and in the fullest possible strength with the Fifteenth Air Force.
He also informed Arnold that he planned to attack Ploesti and Bucharest as soon as the weather cleared. On 25 March, Portal communicated orders to Spaatz and the Supreme Commander Mediterranean Theater of Operations, Field Marshal Sir Henry Maitland Wilson, that instructed them to attack – at the earliest available opportunity – the Bucharest railway centre, Sofia, and other towns in Bulgaria. Spaatz inquired about using this as an opportunity to attack Romanian oil but was rebuffed.
The First Attack
On 4 April 1944, the Americans attacked the Bucharest main railway station dropping 863 tons of explosives on the target area. The raid resulted in the deaths of refugees from northern Moldova. Mihail Sebastian wrote in his diary on 8 April 1944:
From the railroad station to Basarab Boulevard, no house was left unscathed. The view was harrowing […] I couldn’t get beyond Basarab, I went back home with a feeling of disgust, horror and powerlessness.
Conductor Emanuel Elenescu recalled:
A tram still standing was leaning against a house, and the rail was bent. All the dead people were untouched by the bombs, all died from the shock wave.
On 5 April 1944, American strategic bombers of the Fifteenth Air Force struck the Ploesti marshalling yards that serviced key lines into Moldova. The field order itself stated:
The Ploesti [Marshaling Yard] is a key point in rail lines to Moldova. Current tactical situation on Russian Front makes this target an important and active communications center for the Germany Army.
The two attacks resulted in 7,600 dead, 7,600 injured, and the destruction of 46,523 homes. The bombing affected many Romanian officers who were given leave to care for their families.
Shortly after the bombing, Allied air leaders sought to exploit the attacks on Romanian rail and refugees. Spaatz revealed to the commander of the MAAF, Eaker, on 6 April 1944 that he felt ‘it of utmost importance that these attacks be continued to attempt complete interruption of rail traffic.’ On 11 April Portal sent a message to Spaatz and Wilson detailing the prospect of attacking refugees to aid the Soviet advance. He wrote:
[The] Russian advance into Roumania has created [a] chaotic refugee movement south-westwards […] Maximum possible bombing effort in the Balkans until further notice should be concentrated on Roumania, where German military position weakest, German economic interests greatest and the Government most shaken.
Romanian civilians and Axis refugees now represented a secondary target that the Allies were willing to exploit.
On 24 April 1944, the MAAF produced a paper outlining the potential targets of an infrastructure bombing campaign against Romania. Along with an in-depth analysis of the military effects of the bombing, the paper pointed to the benefits of targeting civilian rail lines to aggravate the ongoing domestic problems within Romania. Group Captain J.C.E. Luard, who wrote the analysis, argued attacking civilian rail lines placed increase pressure on Romania, which might knock the key German ally out of the war. Luard argued that attacks against civilian rail had the most significant potential for creating unrest in Romania. He argued that:
[t]heir destruction or damage leads to the dislocation of internal distribution of food, fuel, and other essentials for the civilian population.
Slowing the Axis forces’ ability to supply their frontline troops in Bessarabia and the ensuing panic of civilians represented Luard’s defence for centring on civilian and refugee targets. Ultimately, he hoped to force Romania, a key German ally, out of the war.
Luard stressed that the strike on rail stations and bridges should focus on those transportation centres leading westward out of Bucharest to hinder the flight of the refugees. He gave the Bucharest rail centres the highest priority for American bombers. Aside from the military impact, Luard argued that bombing caused internal unrest. He noted that there was:
[c]onfusion created during a recent raid at the Bucharest North Station by the presence of crowds of refugees from Bessarabia and Transnistria awaiting trains to the west.
In addition to Bucharest, Luard listed Craiova as a priority target due to the refugees that flowed through the city. Luard assessed that refugees from Bessarabia were being evacuated from Bucharest through Craiova. He believed that an attack against Craiova might clog rail traffic in western Romania. 
Along with marshalling yards, Luard identified one highway for bombing, Route Three. Route Three connected Bucharest westward to Caransebes, and its destruction had the potential to cause the most significant harm to Axis road traffic entering and exiting Romania. Six bridges were identified as critical targets. According to the report:
[t]he destruction of bridges closer to Bucharest would impede the movement of refugees west and complicate the dispatch of repair supplies from Budapest, Vienna, or Germany.
Both Route Three and the rail lines from Bucharest to Craiova were the primary routes in and out of Romania. Damaging these two means of evacuation meant flooding the country with refugees.
The Air Campaign
For a brief period, the MAAF launched an effective air campaign aimed at bridges, rail lines, and other transportation targets listed in Luard’s planning document. The attacks against the Romanian rail lines were devastating. According to a report compiled by the Romanian General Staff on behalf of the United States Office of Strategic Services after the war, the air attacks against the Romanian rail network and supply lines from 4 April to 18 August 1944, crippled the ability of the Romanians to move troops and equipment throughout the country. During this period the Americans destroyed 157 locomotives, 619 passenger cars, 3,010 cars carrying goods, 1,525 tanker cars, and ten auto motors. Months after the First Iasi-Kishinev, Antonescu warned the Adolf Hitler, of the danger posed by the continued bombardment of his country by the MAAF. On 5 August 1944, Antonescu told Hitler:
We have concluded that if Germany does not give us the possibility to defend ourselves, Romania cannot keep up this position infinitely, because it would [lead] to her total catastrophe.
He also informed Hitler that the attacks against the Romanian infrastructure significantly weakened the Romanian civilian and military transportation network. By August 1944 follow up attacks after the First Iasi-Kishinev Offensive had brought rail and road traffic to a complete standstill.
As the First Iasi-Kishinev Offensive subsided, so did the attacks on Romanian military and civilian transportation targets. With the Red Army’s advance stalled, Spaatz received permission to shift the focus of the air war in Romania to oil production facilities. On 10 May 1944, the Soviets told the United States military representative in Moscow Major General John Deane that due to the stabilisation of the Romanian front, they would be more amenable to the resumption of attacks on the Ploesti oil facilities. On 16 May the Soviet emphasised that while they remained open to the Americans launching a strategic air campaign against the Romanian oil refineries, they wanted the Americans to continue their air attacks against the Romanian transportation targets, which included refugees. While much of the bombing during June and July 1944 focused almost entirely on attacks against the refineries, there were occasional moments when the Americans returned to targeting refugees. On 4 July, the 450th Bomb Group of the American Fifteenth Air Force attacked one of the six major railway bridges servicing refugees who were fleeing Bucharest westward at the town of Pitesti. The bridge spanned the Arges River and allowed the trains to move west to Craiova. At 10:17, 23 B-24s of the Fifteenth Air Force dropped 57.5 tons of bombs on the bridge destroying it. Even in the height of the oil offensive against Romania, refugees remained a target.
During April and May 1944, the MAAF conducted an aggressive air campaign against Romania’s infrastructure to support the Soviet Union’s advance into Romania. As the situation in Romania deteriorated, the Allies expanded their bombing campaign to aggravate a refugee crisis inside the country. They hoped that the bombing would both destabilise Romania politically and the refugees themselves might impede Axis rail and motor traffic to the front. American bombers struck rail stations, lines, and bridges used by refugees to flee the Soviet invasion of Romania. While this article highlights the bombing of Romanian refugees during the First Iasi-Kishinev Offensive, more research is needed to better grasp the extent and nature of the air attacks against Axis refugees on the Eastern Front.
Considering the 75th anniversary of the D-Day landings, it is tempting to romanticise the Allied efforts to liberate Europe during the Second World War. While defeating Nazi Germany and its allies were paramount, it does not excuse overlooking actions taken by the Allies that can only be described as war crimes. The Romanian refugees were civilians, not military combatants. Nontheless, the Allies chose to turn them into weapons to achieve a strategic goal: the defeat of Romania. It is important to have a public discourse about all actions taken by the Allies to win the Second World War. Without such a dialogue, future policymakers are likely to make mistakes by examining the Allied experience through the ‘good war’ narrative.
Dr Luke Truxal is an adjunct at Columbia State Community College in Tennessee. He completed his PhD in 2018 from the University of North Texas with his dissertation ‘Command Unity and the Air War Against Germany.’ Luke received the Outstanding Dissertation in Military History award from the University of North Texas. His previous publications include ‘Bombing the Romanian Rail Network’ in the Spring 2018 issue of Air Power History. He has also written ‘The Politics of Operational Planning: Ira Eaker and the Combined Bomber Offensive in 1943’ in the Journal of Military Aviation History. He can be reached on Twitter at @Luke_Truxal.
Header Image: B-24H-5-CF ‘Dixie Belle’ of the 719th Bomb Squadron, 449th Bomb Group. It was lost on the mission to Bucharest on 4 April 1944. (Source: American Air Museum, Duxford)
 For more recent scholarship that covers the bombing of Romania outside the spectrum of oil see Mark Conversino, Fighting with the Soviets: The Failure of Operation FRANTIC, 1944-1945 (Lawrence, KS: University Press of Kansas, 1997). For an analysis of the MAAF’s attacks against Romanian rail targets and the mining of the Danube see Robert S. Ehlers Jr., The Mediterranean Air War: Air Power and Allied Victory in World War II (Lawrence, KS: University Press of Kansas, 2009), p. 364 and pp. 373-7; Conrad Crane, Bombs, Cities, and Civilians: American Air Power Strategy in World War II (Lawrence, KS: University Press of Kansas, 1993), pp. 95-8; To date, the best analysis of the attacks against Romanian civilians is Richard Overy, Bombers and the Bombed: Allied Air War Over Europe, 1940-1945 (New York: Penguin Books, 2014), p. 8, 404, 413. For further analysis of attacks against the Romanian infrastructure see Luke Truxal, ‘Bombing the Romanian Rail Network,’ Air Power History, 65:1 (2018).
 For a comprehensive history of the First Iasi-Kishinev Offensive, see David Glantz, Red Storm Over the Balkans: The Failed Soviet Invasion Spring 1944 (Lawrence, KS: University Press of Kansas, 2006), pp. 60-70, 76-100. Glantz is the first historian provide a detailed analysis of the Red Army’s failed first attempt to take Romania. He argued that the history of the campaign was forgotten because of its shortcomings.
 For an analysis of the military setbacks that prompted the evacuation see Robert Citino, The Wehrmacht Retreats: The German Campaigns of 1944-1945, (Lawrence, KS: University Press of Kansas, 2017), pp. 303-4; For the numbers of refugees in Romania who were deported after the defection of Romania to the Allies, see Janos Krustof Muradin, ‘The Deportation of Germans from Romania to the Soviet Union in 1944-1945,’ Acta Universtatis Sapientiae, European and Regional Studies, 7 (2015), p. 43.
 Library of Congress (LoC), Personal Papers of General Carl Spaatz, Air Ministry to USSAFE and AFHQ Algiers, 21 March 1944.
 LoC, Spaatz Papers, Air Ministry to MAAF and USSTAF, 22 March 1944.
 LoC, Spaatz Papers, Carl Spaatz to Henry Arnold, 23 March 1944.
 LoC, Spaatz Papers, Air Ministry to USSTAF and AFHQ Algiers, 25 March 1944.
 For tonnage of bombs, see Combined Arms Research Library, Technical Subcommittee on Axis Oil, ‘Oil as a factor in the German war effort, 1933-1945,’ p. 173. For first-hand accounts of those who survived the bombing, see Steliu Lambru, ‘The Bombing of Bucharest in April 1944,’Radio România Internaţional, 29 April 2013.
 Truxal, ‘Bombing the Romanian Rail Network,’ p. 19.
 Dinu C. Giurescu, Romania in the Second World War (1939-1945), translated by Eugenia Elena Popescu (New York: Columbia University Press, 2000), p. 133; See also Truxal, ‘Bombing the Romanian Rail Network,’ p. 20.
 LoC, Spaatz Papers, John Deane to Spaatz, 10 May 1944.
 For the military intelligence analysis of the importance of the Pitesti bridge in relation to refugees see Luard, ‘The Balkan-Situation-Possibilities of Air Attack,’ p. 9; For a brief mission summary of the attack against the Pitesti bridge see 450th Bomb Group Memorial Association, S-2 Reports, ‘Mission Date: 4 July 1944, Mission NBR. 96.’
Between 1939 and 1945 over 600,000 civilians were killed across Europe in aerial attacks. Over a million more were injured. Before the outbreak of the Second World War, claims had been made in both fiction and theory as to the devastating consequences and strategic utility of bombing against an enemy’s ‘vital centres’ and the ‘will of the people’. While the human consequences were indeed devastating, there is room to question and doubt the strategic utility of the bombing campaigns waged by both sides in the European theatre in the Second World War.
In a work that revises and challenges our existing understanding and analysis of the bombing campaign of the Second World War – including Overy’s prior work on the subject – Richard Overy goes beyond the traditional study of the planning and execution of the Blitz and the Allied bomber offensive to provide fresh insights into this controversial topic. In aiming to provide a narrative of the bombing war in Europe, Overy sought three new treatments of the subject (p. xxv); first, an account that covered the experience of the whole of Europe – Allied, Axis, occupied, and neutral. Second, Overy placed the bombing operations of both sides in their strategic military context alongside other operations and identified the essential supporting, rather than the decisive, character of these operations. Sweeping across Europe, Overy assessed the strategic bombing performance of the Luftwaffe over the UK and the USSR, and the Royal Air Force (RAF) and United States Army Air Force over Germany, Italy and Axis-occupied Europe. Third, he contrasted the experiences of both the bombers and the bombed, and it is Overy’s treatment of the subject of the bombed that makes this work original and essential. Overy drew on local archives of bombed cities and reexamined existing archives. By using this ‘double narrative’ of what bombing campaigns were designed to achieve and the reality of their impact on populations, Overy has sought to provide a fresh look at the issues of the campaign’s effectiveness and ethical ambiguity. Indeed, the ethical dimensions of the bombing of German targets in occupied Europe was the subject of political debate in the UK, Overy noting that ‘the erosion of ethical restraints’ and the subsequent escalation of bombing efforts against German cities was ‘a simpler issue than the moral dilemma of causing civilian casualties’ in occupied Europe (p. 549).
Overy’s analysis is influenced by his adoption of a classical division of bombing actions into ‘strategic’ and ‘tactical’, where ‘strategic’ is taken to mean bombing conducted at long range, against economic (or at least non-military) targets, and ‘tactical’ is taken to mean attacks against enemy airfields and interdiction of enemy ground forces. This taxonomy can obscure more than it reveals. If air action against an enemy’s airfields is ‘tactical’ in character as it was by the Allies in 1944-1945, then so were the attacks by the Luftwaffe against RAF airfields in the summer of 1940. Moreover, when discussing the events of 1940, Overy contended that the separation in time of the Battle of Britain and the Blitz into discrete activities is inaccurate and ascribes this narrative to, in part, the Battle of Britain being fought by Fighter Command, and ‘the Blitz by the civil defence forces, anti-aircraft units and small numbers of night fighters.’ While it may be legitimate to see the Battle of Britain and the Blitz as part of a common continuum – as the Luftwaffe did – Overy’s use of force elements and their command states to explain this difference between narratives is problematical. Anti-aircraft units were under the command of Fighter Command during both periods, as were night fighters. The Blitz was not fought by civil defence forces, because their role is not to fight, their role is to manage some of the consequences of some of the enemy’s actions (pp. 73-4). Further, it is legitimate for historians to regard the Battle of Britain and the Blitz as distinct: while the Luftwaffe regarded itself as having fought a single campaign against the UK from July 1940 to June 1941, it clearly has two distinct elements: ‘tactical’ operations against the RAF’s air defences to gain control of the air prior to an invasion, and ‘strategic’ operations against industrial and civilian targets.
A similar ambiguity between ‘tactical’ and ‘strategic’ operations exists in any analysis of the German bombing campaign on the Eastern Front. Overy noted that aerial attacks on Leningrad were part of the German siege of that city, rather than any independent ‘strategic’ action against industrial targets. More successful were attacks against Soviet lines of communication, in particular, railway infrastructure: stations and supply centres, rather than more easily repaired tracks and bridges (p. 207). Nonetheless, both Overy and several reviewers have noted that there were occasions where Allied or Axis’ bombing was bearing fruit: denying their enemy’s air defences, reducing the production and distribution of key materials. However, the effectiveness of these strikes were reduced as targets were switched: either because of poor intelligence analysis, as with the Luftwaffe’s move away from attacking the RAF’s airfields in 1940 to bombing British cities, or because bomber aircraft were reapportioned from industrial and military targets to political ones as with the switch in effort by RAF Bomber Command to target Berlin in the autumn of 1943.
Overy also covered in great detail the civilian preparations for an experience of the bombing: the establishment of air raid warning systems, civil defence organisations, and individual preparations by citizens. He recorded systems of compensation for civilian loss of earnings, noting too that as early as December 1940 the German Government banned Jews from receiving compensation for loss of earnings (p. 422). Effective civil defence in Germany is contrasted with almost the total lack of preparation in Italy, which lacked an air defence network and – unlike the other totalitarian regimes fighting in the war – ‘failed to mobilize a large mass movement for voluntary civil defence’ (p. 517). It is new perspectives like these that have led to the book being described as: ‘the standard work on the bombing war…probably the most important book published on the history of the second world war this century.’
In analysing the contribution of strategic bombing to combatant’s overall aims, Overy made it clear that whatever the desires or claims of bomber leaders from Wolfram von Richthofen to Arthur Harris, neither Allied nor Axis strategic bombing efforts were ever more than supporting. Overy noted J.K. Galbraith’s conclusion that the bombing campaign did not win the war, and that the bombing campaigns were all ‘relative failures in their own terms’ (p. 609). Overy also noted that strategic bombing was ‘in the end inadequate in its own terms for carrying out its principal assignment and was morally compromised by deliberate escalation against civilian populations’ (p. 633). This has led to at least one reviewer noting that this represents a shift from Overy’s previous works, which took a far more positive view of the strategic contribution of Allied bombing efforts.
Scored against their aims, the allied bombing efforts were indeed ‘relative failures’, but it is legitimate to ask whether they had utility as an instrument of strategy in delivering a net positive effect. Viewed through the lens of an indirect strategic approach, one cannot, as Gary Sheffield observed, ignore the fact that Germany was forced to apportion resources to the air defence of the home front that could otherwise have been used to other ends: ‘the Germans were forced to commit resources to home defence – anti-aircraft guns, aircraft, optical sights, manpower – that could not be put to other uses.’ It is also important to assess the bombing campaigns not against the fiction of H.G. Wells and others, nor the equally far-fetched prophecies of Giulio Douhet, but in the longue durée of strategic thinking. In an unacknowledged nod to Carl von Clausewitz’s dictum that ‘the defensive form of warfare is intrinsically stronger than the offensive’, Overy noted that the failure of German and Axis bombing operations in the Battle of Britain, and against both the USSR and Malta ‘highlighted the extent to which the balance between air defence and air offence was moving in the defender’s favour’ (p. 626). The same challenge faced the Allies in late 1943: if the Allied bombing campaign drew more resources away from the Eastern Front, at some point, those resources would threaten to impose unsustainable costs on the Allied bomber forces (p. 343). The response to this developing stalemate was an escalation of bombing effort.
In conclusion, commenting on the ‘balance sheet of bombing’, Overy noted that not even the known weaknesses of bomber capability and performance ‘prevented the escalation of all the major offensives’, and that (p. 628) ‘the issue of escalation is central to any judgement about the broader ethical implications of the bomber offensives.’ At its most destructive, the Allied bomber offensive perhaps came closer than any warfare before or since to Clausewitz’s description of war divorced from its political object: ‘a complete, untrammelled, absolute manifestation of violence.’
Toby Dickinson served in the RAF from 2002-2018. He is currently a student on the War and Strategy MA programme at the University of Leeds.
 In America, Overy’s book has been published under the title, The Bombers and The Bombed: Allied Air War over Europe, 1940-1945 (2014). This version misses out significant elements of the early period covered in the UK edition of Overy’s book.
 On this theme, see: Tami Davis Biddle, ‘Book Review – The Bombing War: Europe, 1939–1945 by Richard Overy,’ War in History, 21:4 (2014), pp. 553-5.