Wikipedia

Spanish airlift of 1936

The Spanish airlift of 1936 was a military operation, carried out by the Nationalists during the early phase of the Spanish Civil War. It did not have any specific code name. Its objective was to bypass the Republican naval blockade of the Strait of Gibraltar and transport by air the soldiers stationed in the Spanish Morocco to the rebel-controlled part of Andalusia. The undertaking was hugely successful; during 85 days between July 19 and October 11 the Nationalists transported at least 14,000 men and at least 270 tons of war materiel. The success was possible thanks to German and Italian assistance, as aircraft sent by Hitler and Mussolini carried most of the troops and equipment. The operation is viewed as innovative, as it was the first ever large-scale military transport by air. Since there was no major Republican counter-action, the airlift was a challenge in terms of logistics and technology rather than combat. The opinion prevailing in historiography is that the airlift was vital for the Nationalists and helped to turn the failed coup into a long-lasting civil war.

Moroccan troops boarding Ju 52

Background

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Strait of Gibraltar (Africa to Europe)

The coup of July 1936 commenced in the Spanish Morocco; on July 17 the rebels easily gained control of most of the protectorate, suffocating remaining islands of resistance on July 18. However, on the peninsula the coup was far less successful; on July 18 the insurgents gained rather shaky control over Seville and Córdoba, while the situation remained unclear in Cádiz, Granada, Huelva and Málaga. During the evening of that day, a few hundred rebel Morocco-stationed troops boarded the destroyer Churruca, which in the early hours of July 19 transported them to Cádiz, greatly contributing to the full rebel takeover of the city. However, on her way back, the Churruca's officers were overpowered by the crew. Other warships loyal to the government were deployed in the Strait of Gibraltar, blocking any would-be further transport of the rebels by sea.[1] The southern tip of the peninsula, ranging from Cádiz to Seville, was now firmly controlled by the insurgents; however, they were isolated and in danger of being overrun. Francisco Franco arrived in Morocco on the morning of July 19 and took command of the troops. Since the protectorate was fully controlled, the battle-hardened Army of Africa was not required there; instead, the rebels needed the troops badly in Andalusia.[2] As sea transport no longer remained an option, the decision to commence airlift was spontaneously taken during a meeting of high commanders, presided by Franco.[3]

Early phase

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Dornier Wal

During the early days of the rebellion, there were very few aircraft available for organizing an airlift from Morocco to Andalusia. 3 Fokkers F-VII were seized either at the Seville airport or in Larache,[4] and 2 military Dornier J Wal seaplanes remained at the Cádiz naval base.[5] One Fokker transported troops from the Sania Ramel airfield in Tetuan to the Tablada airport in Seville already on the evening of July 19, and soon all 5 aircraft were engaged.[6] The transport capacity was very limited: neither the Fokker nor Dornier could have accommodated more than 15 troops.[7] The first unit airlifted was 17. Company of the 5. Bandera of the Foreign Legion, reassembled in Andalusia on July 20.[8] The same day, a Lufthansa Ju 52 postal plane flying from Gambia made an intermediary landing in the Canary Islands; the pilot was forced to fly to Tetuan,[9] but instead of joining the airlift he carried Franco's mission to Berlin.[10] On July 25, the Nationalists seized a Douglas DC-2; this increased the maximum daily transport capacity to some 130 men.[11] Aware of his insufficient means, on July 23, Franco cabled Hitler and Mussolini requesting transport aircraft;[12] he also sent his personal envoys to Berlin and Rome. They managed to see Hitler on July 25, the same day the German dictator agreed to provide assistance, code-named Feuerzauber. Mussolini was less decisive, but within 48 hours[13] he independently decided to do the same thing.[14]

German and Italian buildup

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Junkers Ju 52

The first Junkers 52 machine sent by the Nazis arrived in Tetuan on July 28;[15] others arrived during next few days.[16] Following some time dedicated to maintenance etc., the first Ju 52 joined the airlift on July 29. When operated as a regular passenger plane, a Junkers would normally carry 17 passengers; with all seats removed, 35 densely-packed soldiers were able to sit on the floor.[17] The aircraft was large enough also to accommodate howitzers and artillery pieces with total load up to 3.5 tons.[18] On July 30, the first Italian Savoia-Marchetti 81 machines landed in Nador from Sardinia.[19] They were powerful aircraft, with slightly larger capacity than that of the Junkers. Other Ju 52 and SM 81 aircraft started to arrive during the first days of August. Whereas the Junkers either came aboard a ship to Cádiz[20] or flew via Italy (one Ju 52 was lost when its crew by mistake landed in the Republican-held Extremadura).[21] The Savoias flew directly from Sardinia. Their fleet was complete by August 10, with 20 Junkers[22] and 12 Savoias in place. Though unarmed,[23] they were manned and serviced by German and Italian military pilots and technicians.[24] Up to this moment, during 22 days of the airlift, there were reportedly already some 5,000 troops carried by air across the straits; probably around a half were transported by the Germans (in comparison, so-called Convoy de la Victoria got 1,600 men transported by sea on August 5 only).

In full swing: average transport rates

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Savoia-Marchetti SM 81

On August 10, Franco had 38 aircraft at his disposal: 20 Junkers, 12 Savoias, 3 Fokkers, 2 Dorniers and 1 Douglas. This fleet would come to operate the airlift during the following 2 months, though some of them would be gradually withdrawn.[25] With each aircraft making one round-trip daily, in total, they were supposedly capable of carrying either 1,000 men or 100 tons per day. However, these figures were purely theoretical and actual daily transport rates were much lower. Not all machines were always available; every day even up to half of them were undergoing repair, maintenance or waiting for spare parts. There were also acute fuel shortages. In practice, once the full fleet was assembled, on average, there were some 250 soldiers and 5 tons of materiel carried per day. Depending upon circumstances the figures varied. According to detailed German records, some of their weekly figures were (first men, then tons): 700/11.6 (3rd week of August), 1,275/35 (4th week of August), 1,200/37 (1st week of September), 1,400/49 (2nd week of September), 1,120/39 (3rd week of September) and 1,550/68 (4th week of September).[26] One German pilot recollected that his daily record was 241 soldiers flown.[27] The proportion between men and equipment differed. Initially, priority was given to soldiers, and later there were weeks of increased materiel payload; the record one was the week in September, when 69 tons were carried by air across the straits.[28]

Modus operandi

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Douglas DC 2

Initially, the flights were taking place between Tetuan and Seville (200 km). However, once the airfield in Jérez de la Frontera had been restored to use in early August, flights from Morocco were re-directed there (140 km). This allowed them to make savings on fuel.[29] Because of their low cruising speed, the Dornier seaplanes were employed on the route from Ceuta to Algeciras (30 km); as they were wearing out quickly, later they were withdrawn from service altogether. Normally a one-way flight took around one hour to Seville and 40 minutes to Jerez.[30] Aircraft were usually flying at an altitude of 2,500-3,000 meters, mostly to avoid fire from anti-aircraft guns mounted on Republican warships patrolling the straits.[29] Protection was initially provided by Nieuport Ni-52 machines, stationed in Larache and Tetuan. Later they were joined by German Heinkel H-51 and by Italian Fiat CR 32 fighters.[31] As it was inefficient to provide cover for a single aircraft, transport planes were usually flying in a group. Most aircraft were flying a number of round-trip flights per day. One source claims that when in service, an average Junkers was doing 3-4 rounds daily.[29] However, given that there were 868 two-way flights done by the Germans and recorded until October 11,[32] the daily average per aircraft is around 0.6.[33] This suggests that days of intense flying were interchanging with days spent on the ground, when a plane was undergoing maintenance, repairs and refueling.

Problems

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Fokker F VII

The largest single problem was shortages of fuel. Some amount was available in stocks; efforts were made to purchase as much as possible from the Portuguese and from the British in Gibraltar;[34] Some quantities were delivered by German tankers. Improvised measures involved blending air fuel with various fluids, typically benzol, and then rolling drums to make sure both components mixed up properly. With airport infrastructure not ready to handle so heavy traffic, in Jérez sherry pumps were used to refuel the aircraft; however, their speed was dramatically slow, some 3 liters per minute.[28] Another major problem was the Saharan sand, responsible for excess wear out of hardware; there was no solution found, except covering the engines when idle. Extreme heat made maintenance service difficult during the day, and much work was carried out by night.[35] Occasionally, the interiors of the aircraft had to be cleaned, as soldiers transported frequently went sick when airborne.[36] The Republican air force proved to be the least of their problems. Though the Malaga air commander demanded “a good hunting squad” to be relocated to his airbase, the Republican air command did not react. There was not a single case of Republican aircraft attacking the Nationalist airlift.[37] Exact losses are unclear; it is known that the Germans lost only 1 Junkers in an airfield collision. A few machines may have been lost by the Italians, though none in combat.

Dynamics

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regulares (earlier photo)

The dynamics of troops transport is highly unclear. Before the first German Junkers joined the airlift, planes available to the Nationalists might have carried few hundred men. In July, during 102 round-trips there were 837 men transported.[38] One author claims that once the Germans and Italians joined the operation, until August 5, there were 1,500 men transported.[39] According to one scholar “by the week of 10–16 August”, German planes alone carried 2,853 soldiers and 7,9 tons of equipment,[40] but another one claims that “fifteen thousand men crossed in ten days”.[41] A popular synthesis maintains vaguely that “in just a few weeks, over 13,000 soldiers had crossed the Strait of Gibraltar”.[24] Another historian claims that by middle of August there were already 15,000 troops on the peninsula,[42] while one more author writes that 15,000 had been flown by the end of August.[43] These estimates imply an extraordinarily high daily average and suggest that during some 40 days of September and October there were only a few thousand flown. Other works do not confirm that the airlift became much less intense after August. German data suggests a fairly stable rate of transport.[26] One source claims that in August there were 6,543 men flown during 353 missions, while in September the respective figures were 5,455 and 324. However, these figures are for Moroccan troops only.[44]

Command

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Alfredo Kindelan

The operation was a complex and previously unheard of logistical undertaking, which involved refueling (purchase of fuel, transport, storage, pumping), repair and maintenance (staff, spare parts procurement, workshop availability, tools), handling of troops (transport, accommodation, assembly, waiting, onboarding and offboarding) and air-traffic management. None of the sources consulted provides information on command chain or division of duties. Some sources credit Alfredo Kindelán, who was nominated by Franco as the head of his air force on July 30, with the organisation and execution of the entire airlift.[45] However, Kindelán spent the first days of the coup in Gibraltar[46] before moving to Morocco. In early August he set up his headquarters in Seville. In his memoirs, Kindelán is not very eloquent and dedicates rather little attention to the airlift.[47] Back in Germany, the logistics were co-ordinated by General Helmuth Wilberg.[48] The man to command the detachment sent to Spain was initially Major Alexander von Scheele,[49] who was later followed by Colonel Walter Warlimont.[50] The Italian air detachment was from the onset led by Colonel Ruggero Bonomi.[51] However, both Scheele and Bonomi commanded entire air fleets, sent by both dictators to Spain, including bombing and fighter operations over the peninsula. The officer commanding the German share of the airlift operation was Rudolf Freiherr von Moreau.[52]

Official status

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Italian SM 81 in Nationalist colors

German and Italian aircraft were dispatched to Franco on a secret mission. Italian pilots and their machines were officially incorporated into the Spanish Foreign Legion and posed as part of it.[53] The Germans set up HISMA, a company supposed to provide transport services between Morocco and Spain; all Ju 52 were officially operated by this entity.[54] Luftwaffe pilots travelled in plain clothes and if detained, they were to pose as tourists with the Reisegesellschaft Union, part of the Nazi leisure organisation.[55] Both German and Italian machines were re-painted and stripped of their national symbols. Despite all the effort, Fascist and Nazi assistance soon ceased to be a secret. During the flight from Sardinia to Morocco, 3 SM 81 machines either crash-landed or mistakenly landed on French territory. The investigation soon revealed the nature of their mission.[56] British intelligence got wind of German assistance when they intercepted a message from the Spanish consul in Tangier; in early August the British vice-consul in Tetuan reported 20 “large aircraft” and German anti-Nazi workers in Hamburg provided more news. Later in August, the Communist propagandist Arthur Koestler saw foreign airmen in Seville, though there was no proof they were military.[28] By September it was already widely known that German and Italian aircraft and men were heavily involved in transporting Franco’s troops to the peninsula.[57]

End of airlift

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Canarias

On September 29, 1936, the Nationalist force led by the cruiser Canarias engaged and defeated the Republican fleet during the Battle of Cabo Spartel. Since then the Republican naval command no longer attempted to control the straits and withdrew its warships to their naval bases, where they mostly remained idle. The Nationalists immediately resumed their transport of troops from Morocco to Andalusia by sea. Following some 10 days it was concluded that the maritime route across the straits was fully safe, and that there was no longer a need for an airlift. It was effectively terminated on October 11, 1936. Sources provide conflicting figures as to the number of troops and load of equipment transported in total during the entire exercise, which lasted for 85 days between July 19 and October 11. The figure usually referred to is “over 20,000”,[58] but Kindelán claims there were only 14,000 men.[59] There are also more vague estimates of “between 14,000 and 23,000 men”.[60] The total load of materiel transported is at times given as 270 tons,[61] though other sources refer to this figure as equipment carried by the Germans only. Others quote the figure as 400 tons.[62] At least 36 artillery pieces were transported.[63] The Germans are credited as the key component of the airlift, responsible for transport of some 13,000 troops and 270 tons,[64] though some sources claim the Germans carried 17,000 soldiers.[65]

Assessment

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decisive factor, major innovation

The operation of flying troops and equipment from Morocco to Andalusia is often referred to as “the first airlift in military history”[66] or similarly.[67] Some authors noted it as “major innovation in air doctrine”,[68] though others when discussing innovations introduced during the Spanish civil war did not mention it.[69] Some credit the Nationalist command in Morocco for “resourcefulness”.[70] It is often maintained that the airlift turned the odds in favor of the insurgents. One author underlines that “it is no exaggeration to say that the airlift saved the Nationalist cause in the summer of 1936”,[71] and another maintains that the airlift was “decisive factor in giving Franco the advantage in the struggle for power”.[72] Hitler himself claimed most of the credit; in 1942 he commented that “Franco ought to erect a monument to the glory of the Junkers 52”.[73] This thesis is not infrequently repeated by present-day historians. One author claims that “Mussolini and Hitler turned a coup d’etat going wrong into a bloody and prolonged civil war”.[74] Another notes that “Nazi and Fascist military aid was considerable and decisive for Franco's victory”.[75] In popular narratives the thesis is even more bold: “Ju-52: German transport aircraft which enabled Franco to win the Civil War”.[76] However, there are historians who claim that already prior to arrival of German and Italian aircraft Franco had enough soldiers flown to control the situation in Andalusia.[77]

See also

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Footnotes

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  1. ^ „only about 700 were transferred during the first twenty-four hours before the Republican army established a blockade”, Stanley G. Payne, The Spanish Civil War, Cambridge 2012, ISBN 978-0521174701, p. 82
  2. ^ the rebels initially had some 120,000 armed men; out of these, 40,000 were stationed in Africa, Julian Casanova, The Spanish Civil War, London 2013, ISBN 978-1350127586, p. 24
  3. ^ Rafael A. Permuy, El puente aéreo del Estrecho, [in:] La Razón 05.08.2011
  4. ^ Sources are extremely confusing as to origin and location of the aircraft initially seized by the rebels in Andalusia and Morocco. One author claims the Fokkers were stationed in the Spanish outpost at Cabo Juby and recalled to the peninsula by the Madrid government; when during intermediary landing 1 was seized in Larache and 2 in Seville, El Paso de Estrecho, [in:] Altorres website. Somewhat different version is that Fokkers and DC-2 were ordered by the Madrid government to bomb the insurgents in Morocco, and that when coming back from the mission they were seized by the rebels, who in the meantime took control of the Tablada airport, for picturesque details see Michael Alpert, Franco and the Condor Legion: The Spanish Civil War in the Air, London 2019, ISBN 978-1786725639, pp. 14–16
  5. ^ some claim 2 other seaplane Dorniers were seized by the rebels in Melilla, El Paso de Estrecho, [in:] Altorres website
  6. ^ Javier Arrimada, Frente a frente. Los primeros combates, [in:] FJavier service 2010
  7. ^ Permuy 2011
  8. ^ Wayne H. Bowen, José E. Alvarez (ed.), A Military History of Modern Spain: From the Napoleonic Era to the International War on Terror, London 2007, ISBN 978-0275993573, p. 8
  9. ^ picturesque details in Alpert 2019, pp. 24–25
  10. ^ with intermediary landings in Marseilles and Stuttgart, Alpert 2019, pp. 25–26. Somewhat different version in Jan Forsgren, The Junkers Ju 52 Story, London 2016, ISBN 978-1781555156, p. 44. Another author claims that the Lufhansa Junkers was seized by the Spanish rebels on July 17, Robert Forsyth, Ju 52/3m Bomber and Transport Units 1936–41, London 2017, ISBN 978-1472818829, p. 77; this seems rather unlikely given at the day the rebellion has barely started
  11. ^ some authors claim that Franco „had only nine small military planes at his disposal”, Payne 2012, p. 82. It is not clear what other 4 machines (apart from 3 Fokkers, 2 Dorniers and 1 Douglas) are counted in
  12. ^ Payne 2012, p. 132
  13. ^ Payne 2012, pp. 132–133. Some authors claim that Mussolini decided to send aircract on July 28, i.e. 3 days after Hitler, Michael Alpert, A New International History of the Spanish Civil War, London 1994, ISBN 978-0312120160, p. 38
  14. ^ Payne 2012, pp. 132–133
  15. ^ it took off from unclear location in Germany fitted with extra cans of fuel, as Ju 52, with an average range of 900 km, was supposed to make a non-stop flight of some 1,800 km. It reportedly landed in Tetuan at 9 AM on July 28, Alpert 2019, p. 28. Other authors claim the plane arrived on July 27, Payne 2012, p. 133, or July 29, Casanova 2013, p. 26. There are also other dates in circulation, the latest one identified is August 1, Lukas Kohn, Arnulf Scriba, Die deutsch-spanische Beziehungen, [in:] Lebendiges Museum Online site
  16. ^ Alpert 1994, p. 40
  17. ^ Forsgren 2016, p. 46. Some sources claim even 45, Alpert 1994, p. 72
  18. ^ Junkers 52 was equipped with wide doors, which enabled loading and unloading of large objects. Some models were also equipped with sliding roof, which enabled loading large objects above by crane, but it is not clear whether this method was used in Morocco
  19. ^ Alpert 2019, p. 122
  20. ^ Jeremy Black, European Warfare 1815–2000, London 2017, ISBN 978-1403907059, p. 119, also Corum 2020, p. 212. However, there are scholars who claim that "Usaramo", the ship carrying German troops and equipment, carried only Heinkel aircraft, Ian Westwell, Condor Legion. The Wehrmacht's Training Ground, London 2004, ISBN 071103043X, p. 15
  21. ^ on August 9 a Ju 52 landed on the airfield in Azuaga. Its crew, 4 German aviators, were eventually allowed to return to Germany (before Republican Spain and Nazi Germany broke off all diplomatic relations), Jerónimo López Mohedano, Eduardo Blanco, capitan Rexach y el Junkers nazi, [in:] Arte, arqueología e historia 23-24 (2017), pp. 231-240
  22. ^ some sources provide the figure of 27 Junkers machines, Payne 2012, p. 133. However, some of them were used as bombing aircraft and not all were employed to carry troops across the straits. Another scholar claims there were 20 Ju 52 made available to Franco, Casanova 2013, p. 26
  23. ^ "Zwanzig unbewaffnete Ju 52 Transportmaschinen", Birgit Aschmann, "Treue Freunde"? Westdeutschland und Spanien, 1945 bis 1963, Kiel 1999, ISBN 978-3515075794, p. 26. Most sources claim the Junkers were provided by the Luftwaffe's Kampfgeschwaders 153, 155 and 253, Westwell 2004, p. 17, though there are sources which claim that at least some machines were provided by Lufthansa. According to one author, some Ju 52 machines were sent straight from the factory in Dessau, Alpert 2019, p. 30
  24. ^ a b Casanova 2013, p. 26. The crew of Ju 52 captured by the Republicans in Azaga were carrying documents of Lufthansa (3) and the Dessau plant (1), López Mohedano 2017, p. 246. It is not clear whether they were provided false documentation, or whether indeed Lufhansa/factory crew manned the transport flight from Germany to Morocco
  25. ^ also Franco started to use Douglas DC-2 as his personal aircraft, e.g. visiting Mola and other commanders, José E. Alvarez, The Spanish Foreign Legion in the Spanish Civil War, 1936, Madrid 2018, ISBN 978-0826273604, p. 244
  26. ^ a b Angel Viñas, Septiembre de 1936: la República tiene perdida la guerra (IV), [in:] Angel Viñas personal web page 20.07.2020
  27. ^ Robert Forsyth, Ju 52/3m Bomber and Transport Units 1936–41, London 2017, ISBN 978-1472818812, p. 26
  28. ^ a b c Alpert 2019, p. 32
  29. ^ a b c Forsyth 2017, p. 26
  30. ^ Westwell 2004, p. 18
  31. ^ Arrimada 2010, Casanova 2013, p. 26
  32. ^ Forsgren 2016, p. 44
  33. ^ 868 flights divided by 20 Ju 52 divided by 75 days
  34. ^ Julio Ponce Alberca, Gibraltar and the Spanish Civil War, 1936–39: Local, National and International Perspectives, London 2014, ISBN 978-1472525284, p. 88
  35. ^ some German mechanics fainted, and some got their hands burnt due to tools left in the sun, Alpert 2019, p. 35
  36. ^ Alpert 2019, p. 35. The Moroccans at times carried with them onboard animals, to be slaughtered for food, apart from cushions like tambourines, teapots etc. Many kept smoking during the flight, which at thin air at 3,000 metres was hazardous. Singing and chanting in Arabic when airborne completed the picture
  37. ^ Permuy 2011. One author speculates about apparently inexplicable lack of Republican counter-reaction and attributes it to chaos, lack of experienced commanders, and anxiety not to cause incident with the British, Alpert 2019, p. 20
  38. ^ Ramón Garriga, Ramon Garriga Boixader, Nicolás Franco, el hermano brujo, Barcelona 1980, ISBN 978-8432006241, p. 68
  39. ^ Antony Beevor, Walka o Hiszpanię 1936–1939, Kraków 2009, ISBN 978-8324011599, p. 176
  40. ^ James S. Corum, Legion Condor 1936–39: The Luftwaffe develops Blitzkrieg in the Spanish Civil War, London 2020, ISBN 978-1472840080, p. 28
  41. ^ Paul Preston, The Last Days of the Republic, London 2016, ISBN 978-0008163419, p. 8
  42. ^ Preston 2006, p. 119
  43. ^ Jacinto Soriano, Diccionario de la España franquista (1936–1975), Madrid 2018, ISBN 978-2140082214, p. 26
  44. ^ Garriga, Garriga Boixader 1980, p. 68. Another author claims that the Germans carried 7,350 men until end-August, 5,455 in September and 1,157 in October, William Green, Warplanes of the Third Reich, New York 1972, ISBN 0385057822, pp. 406–407
  45. ^ “puente aéreo, organizado por el general Alfredo Kindelán con la ayuda de la aviación alemana”, Francisco Tomás Vert, 1936–1939 Vidas de soldado / Vides de soldat, Valencia 2006, ISBN 978-8437065731, p. 54
  46. ^ Kindelán resided in Gibraltar because of its excellent telephone exchange, which offered international communication facilities; the British allowed him to call Berlin, Rome and Lisbon. Ponce Alberca 2014, p. 88
  47. ^ Alfredo Kindelán, Mis cuadernos de guerra, Barcelona 1982, ISBN 8432056774, pp. 83–85. Also his son, who prologued the publication, remains fairly muted on Kindelán’s role in the airlift, see pp. 44–45
  48. ^ Carlos Caballero Jurado, The Condor Legion: German Troops in the Spanish Civil War, London 2013, ISBN 978-1472807168, p. 14
  49. ^ Alexander von Scheele was an experienced pilot; he obtained his license in 1912. During the First World War he was flying combat missions in German South-Western Africa. He then migrated to Argentina, but returned to Germany in the early 1930s. He was killed during an aviation accident in Spain shortly prior to outbreak of the Second World War; he was travelling as a passenger, Chris Dale, Aircraft in the German colonies, [in:] German Colonial Uniforms website. He was chosen also because he was fluent in Spanish, Corum 2020, p. 29
  50. ^ since August 31, Alpert 2019, p. 39
  51. ^ Guido Mattioli, L'aviazione legionaria in Spagna, vol. 1, Roma 2016, ISBN 978-8893271790, p. 47
  52. ^ Westwell 2004, p. 16. Moreau was a relatively young officer. He later specialized in record-breaking long-haul flights and perished in an air accident in Germany in March 1939.
  53. ^ Francisco Romero Salvado, Wojna Domowa W Hiszpanii 1936–1939, Warszawa 2009, ISBN 978-8311115262, p. 103
  54. ^ Hispano-Marokkanische Transport AG Tetuan-Sevilla with its headquarters at Calle O'Donnel in Tetuan was formally registered by the Spanish consul in Tetuan on July 31, 1936, José Manuel Sabín, José Manuel Sabín Rodríguez, Elena Hernández Sandoica (eds), La dictadura franquista (1936–1975), Madrid 1997, ISBN 978-8446008033, p. 227
  55. ^ Alpert 2019, p. 34
  56. ^ Romero Salvado 2009, p. 103
  57. ^ Alpert 2019, p. 33
  58. ^ Sebastian Cox, Peter Gray, Air Power History: Turning Points from Kitty Hawk to Kosovo, London 2013, ISBN 978-1135315986 p. 67, also James S. Corum, The Luftwaffe: Creating the Operational Air War, 1918–1940, Lawrence 1997, ISBN 978-0700608362, p. 184, also Jesus Alonso Millan, Aviones para España, s.l. 2012, p. 58
  59. ^ Kindelán 1982, p. 85
  60. ^ John F. Coverdale, Italian Intervention in the Spanish Civil War, Princeton 2015, ISBN 978-1400867905, p. 108
  61. ^ Kindelán claims 283 ton, Kindelán 1982, p. 85
  62. ^ Alonso Millan 2012, p. 58
  63. ^ Alpert 2019, p. 131
  64. ^ Corum 2012, p. 184, also Forsyth 2017, p. 26, also Alpert 2019, p. 130
  65. ^ Alexander Clifford, The People's Army in the Spanish Civil War: A Military History of the Republic and International Brigades 1936–1939, Philadelphia 2020, ISBN 978-1526760951, p. 12
  66. ^ Stanley G. Payne, The Franco Regime, Madison 2011, ISBN 978-0299110734, p. 123
  67. ^ “first major military airlift in history”, Spencer C. Tucker (ed.), World War II: The Definitive Encyclopedia and Document Collection [5 volumes]: The Definitive Encyclopedia and Document Collection, Santa Barbara 2016, ISBN 978-1851099696, p. 962; “first major troop airlift in history” – Herman Knell, To Destroy A City: Strategic Bombing And Its Human Consequences In World War 2, London 2009, ISBN 9780786748495, p. 133; first major airlift in history” – Corum 1997, p. 323; “first airlift of a significant magnitude” – Camille Allaz, History of Air Cargo and Airmail from the 18th Century, Paris 2005, ISBN 978-0954889609, p. 151, or simply “history’s first airlift” - Ben Hughes, They Shall Not Pass: The British Battalion at Jarama – The Spanish Civil War, London 2011, ISBN 978-1849089081, p. 113
  68. ^ Corum, 1997, p. 185
  69. ^ Raymond Carr, Modern Spain, 1875–1980, Oxford 2001, ISBN 978-0192801296, p. 150
  70. ^ Stanley G. Payne, Civil War in Europe, Cambridge 2011, ISBN 978-1139499644, p. 139
  71. ^ Cox, Gray 2013, p. 67
  72. ^ Casanova 2013, p. 137
  73. ^ Robert Forsyth, Aces of the Legion Condor, London 2012, ISBN 978-1849083485, s. 19
  74. ^ Paul Preston, A Concise History of the Spanish Civil War, London 196, p. 87. One source claims that without German and Italian assistance, flying the entire army of Africa would have taken 9 months, El Paso de Estrecho, [in:] Altorres website
  75. ^ Julián Casanova, The Spanish Republic and Civil War, Cambridge 2010, ISBN 978-1139490573, p. 218
  76. ^ Manuel P. Villatoro, Ju-52: los aviones de transporte alemanes que permitieron a Franco ganar la Guerra Civil, [in:] ABC 18.07.2016
  77. ^ Pio Moa, Mity wojny domowej, Warszawa 2007, ISBN 978-8360335611, p. 239

Further reading

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  • Michael Alpert, Franco and the Condor Legion: The Spanish Civil War in the Air, London 2019, ISBN 978-1786725639
  • James S. Corum, The Luftwaffe: Creating the Operational Air War, 19181940, Lawrence 1997, ISBN 978-0700608362
  • Alfredo Kindelán, Mis cuadernos de guerra, Barcelona 1982, ISBN 8432056774
  • Guido Mattioli, L'aviazione legionaria in Spagna, vol. 1, Roma 2016, ISBN 978-8893271790
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