On This Day in the Spanish Civil War: 2 August 1936 – including the Airlift of the Army of Africa

  • Villamesías, Cáceres, Extremadura

While the Army of Africa advanced north from Seville through western Extremadura, Republican commanders attempted to regain the initiative in southeastern Cáceres. On 2 August 1936, a Republican column advanced on Villamesías, intending to push towards Trujillo, an important Nationalist communications centre. The attacking force was made up largely of militia from Badajoz, Ciudad Real and neighbouring districts, supported by loyal security personnel. The town only has 1,340 inhabitants, yet would be a tiny outpost keeping the town of Trujillo and it 11,500 people ‘safe’ behind Nationalist lines until the Army of Africa could arrive.

Nationalist defenders, including soldiers from the Argel Infantry Regiment, Guardia Civil and local Falangist volunteers, met the attack outside the town. After several hours of fighting, the Republican assault was repulsed and the surviving attackers withdrew. The defeat ended the most significant Republican attempt to recover Trujillo during the opening weeks of the war and helped secure Nationalist control over southeastern Cáceres. The victory was followed by repression in Villamesías. Republican supporters and prisoners were arrested, and later investigations have identified evidence suggesting that those killed in the aftermath were buried within the municipal cemetery, although the full extent of the killings remains uncertain.

Junkers Ju-52/3m transports prepare to airlift Army of Africa troops from Morocco to Spain to aid the Nationalists at the start of the war. (akg-images/ullstein bild)
  • Seville

By the beginning of August 1936, the Spanish Civil War had entered a dangerous stalemate. The military uprising had secured Spanish Morocco and much of western Andalucía, but it had failed to capture Madrid, Barcelona, Valencia, Bilbao, or most of Spain’s major industrial centres. Just as importantly, the Republican government retained control of the majority of the Spanish Navy, allowing it to patrol the Strait of Gibraltar and cut the most direct link between North Africa and the mainland.

For the Nationalists, this presented an immediate strategic crisis, as their most experienced and best-equipped troops remained stranded in Morocco. The Ejército de África, Army of Africa, had earned its reputation during Spain’s campaigns in the Rif and included the Spanish Legion, Regulares recruited in Spanish Morocco, artillery, engineers, transport units, and experienced professional officers. These formations possessed a level of training, discipline, and combat experience unmatched by the largely improvised militia columns then forming across Republican Spain. Their absence from the mainland deprived the Nationalists of the force best suited to conduct offensive operations against the Spanish public.

General Francisco Franco, commanding the insurgent forces in Spanish Morocco, recognised that the war could not be won unless these troops reached Andalucía. Any sustained campaign required artillery, ammunition, motor vehicles, fuel, field hospitals, wireless equipment, engineering stores, and the logistical support necessary to keep a modern army moving. Aircraft could carry men and limited quantities of supplies, but they could not move the heavy equipment required for large-scale operations quickly enough to support an advance across southern Spain.

Miguel de Cervantes, via Wikimedia Commons

Republican naval superiority made a conventional crossing exceptionally hazardous. The government retained the battleship Jaime I, the cruisers Libertad and Miguel de Cervantes, together with several modern destroyers and submarines. The Nationalists possessed only a handful of smaller vessels in the Strait, principally the gunboat Eduardo Dato, the patrol vessel Uad Kert, and the ageing torpedo boat T-19. In a direct engagement, these ships could not reasonably expect to defeat a concentrated Republican naval force.

The Nationalists needed to transport trained soldiers across the Strait as quickly as possible, while also finding a way to move the heavy equipment that aircraft could not carry. During the opening days of August, they attempted to solve both problems simultaneously. An expanding airlift carried troops from Morocco to airfields in Andalucía, while preparations began for a heavily escorted convoy that would risk the Republican blockade to deliver the men and gear needed to transform a foothold in southern Spain into the starting point of a sustained offensive. The success of these operations would determine whether the Army of Africa remained an isolated colonial force or became the striking arm of the Nationalist advance through western Spain.

Within days of the uprising, the Nationalists had already organised an improvised air bridge between Spanish Morocco and Andalucía using whatever aircraft remained available. Military Fokker F.VII transports, a requisitioned Lufthansa Junkers Ju 52, a LAPE Douglas DC-2, Dornier Wal flying boats, and several smaller military aircraft began ferrying troops across the Strait. Most flights departed from Sania Ramel airfield near Tetuán and landed at Tablada, outside Seville, while the Dornier flying boats linked Ceuta with Algeciras. As the operation expanded, Jerez also became an important destination because its shorter approach reduced flying time and fuel consumption. These early flights demonstrated that the Strait could be crossed despite the Republican naval blockade, but their capacity remained limited. Transport aircraft could carry small detachments of Legionaries and Regulares, while bombers and smaller aircraft accommodated even fewer passengers. Heavy artillery, motor vehicles, large ammunition reserves, ambulances, and engineering equipment still had to remain in Morocco. Air transport could reinforce the Nationalists, but it could not yet equip an army capable of sustained offensive operations.

Map fo the operation, via Wikimedia Commons

Foreign intervention rapidly increased the scale of the airlift. German Junkers Ju 52 transport aircraft reached Spanish Morocco at the end of July, and German crews soon joined Spanish personnel in the growing transport operation. Hugh Thomas estimated that by 5 August these aircraft had carried approximately 1,500 men from Morocco to Andalucía, greatly increasing the number of experienced colonial troops available around Seville. Italian assistance followed almost immediately. On 30 July, twelve Savoia-Marchetti SM.81 bombers departed Sardinia for Spanish Morocco. The journey demonstrated the risks of the intervention itself. One aircraft crashed into the Mediterranean, while two others landed in French Algeria after losing their way, leaving nine to reach their destination. Although capable of carrying troops, the SM.81s proved more valuable as long-range bombers and reconnaissance aircraft, supporting the transfer of the Army of Africa by watching Republican naval movements and providing air cover over the Strait.

By the beginning of August, the Nationalists had established the first sustained strategic airlift of the war. Aircraft crossed the Strait daily, landing trained soldiers in Andalucía while returning to Morocco for further loads. The operation demonstrated that Republican control of the sea could be challenged from the air, but it also revealed the limitations of aviation in 1936. Thousands of men could eventually be transported in successive flights, yet an army could not advance on infantry alone. The artillery, ammunition, vehicles, communications equipment, and supplies that made the Army of Africa such an effective fighting force still waited on the opposite shore, and only a successful sea crossing could deliver them in the quantities required.

Savoia Marchetti SM.81, via unknown, Wikimedia Commons

While the airlift expanded, Franco and his senior commanders accepted that aircraft alone could not solve their logistical problem. Every day brought more Legionaries and Regulares to Andalucía, but the heavy equipment needed to support them remained in Morocco. Guns, ammunition, transport vehicles, wireless sets, ambulances, and engineering stores could only be moved in significant quantities by sea. Unless these reached the mainland, the Army of Africa would remain a force of lightly equipped infantry rather than the mobile striking force Franco intended to unleash across southern Spain. Lieutenant Colonel Juan Yagüe, commanding the Legion units assembling around Seville, pressed for reinforcements and equipment to sustain his advance into Extremadura. The first elements of his column had already begun moving north from Seville on 2 August, capturing towns along the route towards Mérida. Every kilometre gained increased the urgency of delivering artillery, ammunition, and transport to support the offensive. The airlift could reinforce the column with trained soldiers, but it could not keep pace with its material requirements.

The naval situation remained perilous. Republican warships continued to patrol the Strait of Gibraltar, and even a single modern destroyer posed a serious threat to the Nationalists’ small escort force. The convoy would rely principally on the gunboat Eduardo Dato, the patrol vessel Uad Kert, the elderly torpedo boat T-19, shore batteries covering the approaches to the Bay of Algeciras, and whatever protection aircraft could provide from above. Francisco Súnico Castedo, commanding the Eduardo Dato, warned Franco at Tetuán that his small escort could not expect to defeat a modern Republican destroyer in open combat. Franco nevertheless insisted that the crossing had to be attempted. Súnico accepted the mission, recognising that without a successful convoy the Army of Africa could not be equipped for the campaign already unfolding in western Andalucía. The precise wording of their conversation survives only in later recollections, but there is broad agreement that Súnico considered the operation exceptionally dangerous and that Franco accepted the risk.

During the night of 4 – 5 August, troops and equipment embarked at Ceuta. The largest transport, Ciudad de Algeciras, carried the bulk of the Legionaries. Ciudad de Ceuta embarked Regulares together with artillery, ammunition, ambulances, and military stores, while the tug Arango loaded additional Moroccan troops. The tug Benot carried further ammunition and supplies. Although historians disagree over the exact number of soldiers aboard the convoy, published estimates range from approximately 1,600 to around 2,500, they agree that its cargo extended far beyond manpower. The ships also carried the artillery, communications equipment, transport personnel, and ammunition that the airlift could not efficiently deliver. The operation depended on careful timing rather than overwhelming force. Reconnaissance aircraft watched the movements of Republican warships, while Italian bombers and other aircraft prepared to distract or attack any vessels threatening the crossing. Rather than remaining in a tight formation, the transports received orders to make for Algeciras at their best speed once they sailed. If intercepted, the escort would engage the enemy long enough for the merchant ships to reach the safety of the Bay of Algeciras. It was a calculated gamble, but one the Nationalists believed they could no longer postpone.

On the afternoon of 5 August 1936, after aerial reconnaissance confirmed the temporary disposition of Republican naval forces in the Strait, the convoy sailed from Ceuta. According to Spanish naval records, the ships departed at approximately 4:30 p.m. Rather than maintaining a close convoy formation, each transport was instructed to make for Algeciras at its maximum speed. The escorts would delay any Republican attack for as long as possible, while aircraft and coastal batteries added whatever support they could from the air and shore.

The convoy consisted of the merchant vessels Ciudad de Algeciras and Ciudad de Ceuta, together with the tug Arango and the ammunition tug Benot. Escorting them were the gunboat Eduardo Dato, commanded by Francisco Súnico Castedo, the patrol vessel Uad Kert, and the torpedo boat T-19. A mixed force of Spanish, German, and Italian aircraft provided reconnaissance and air cover throughout the crossing, although historians differ over exactly how many aircraft participated and which flew during each phase of the operation. As the convoy approached Punta Carnero, near the entrance to the Bay of Algeciras, it was intercepted by the Republican destroyer Alcalá Galiano. Opening fire from long range, the destroyer initially concentrated on the leading transport, generally identified as Ciudad de Algeciras. Súnico immediately manoeuvred Eduardo Dato between the destroyer and the merchant ships, returning fire with the gunboat’s 101 mm guns. The coastal battery at Punta Carnero also joined the engagement, while aircraft attacked the Republican vessel from above. One Dornier Wal flying boat, commanded by Ruiz de la Puente, reportedly dropped bombs close to the destroyer, although contemporary accounts differ over their accuracy and effect. The exchange lasted only a short time. Alcalá Galiano did not attempt to force its way through the escort and instead turned away, passing east of Europa Point. The reasons for this decision remain debated. Some historians credit the combined pressure of the escorting gunboat, coastal artillery, and aircraft. Others argue that the destroyer had encountered the convoy unexpectedly, lacked support from the remainder of the Republican fleet, and judged the engagement too risky to continue. Contemporary Nationalist reports claimed that Alcalá Galiano suffered significant damage and heavy casualties.  According to a radio transmission intercepted, the Alcalá Galiano, commanded by Lieutenant Commander Eugenio Calderón, had suffered 18 dead and 28 seriously wounded, but no Republican casualty list has been found to support these claims, and modern historians generally regard them as wartime exaggerations.

Alcalá Galiano, via Wikimedia Commons

One by one, the transports entered the Bay of Algeciras and reached safety during the evening. None of the merchant ships was lost, and no confirmed fatalities have been identified among those aboard the convoy during the crossing itself. Franco informed General Emilio Mola of the operation’s success in a telegram sent the following day, reporting that the convoy had completed the passage without suffering casualties or material losses. The same telegram claimed substantial Republican losses, but these assertions have not been independently verified. The successful crossing marked a significant operational achievement, but it did not end the struggle for control of the Strait. Republican naval forces remained active, and only two days later they returned to bombard Algeciras, severely damaging Eduardo Dato. Nor did the convoy alone transfer the Army of Africa to the mainland. The airlift continued without interruption, and further crossings by sea followed during the following weeks. The importance of 5 August lay not in destroying the Republican blockade, but in demonstrating that it could be penetrated. For the first time since the outbreak of the war, the Nationalists had successfully delivered not only experienced troops, but also the artillery, vehicles, ammunition, and communications equipment needed to sustain a modern military offensive.

Even before the convoy sailed from Ceuta, Lieutenant Colonel Juan Yagüe had begun leading the first elements of his column north from Seville. On 2 August, Legionaries, Regulares, artillery, and supporting units set out along the route through Extremadura, beginning an advance intended to link the insurgent territories of southern and northern Spain before ultimately pushing towards Madrid. The speed of the offensive reflected the quality of the troops now arriving from Morocco. Unlike many of the hastily organised militia columns fighting for the Republic, the Army of Africa consisted of professional soldiers accustomed to operating as combined formations. Legionaries and Regulares advanced alongside artillery, engineers, transport units, and communications personnel under experienced officers who had spent years campaigning in the Rif. As additional troops landed in Andalucía, Yagüe’s column was reinforced without interrupting its momentum.

The convoy of 5 August contributed manpower while the merchant ships brought the equipment that allowed those soldiers to operate as an army in the field. Artillery pieces, ammunition, motor transport, wireless equipment, ambulances, and engineering stores enabled the advance to continue over increasing distances while maintaining communications and supporting sustained combat operations. Every successful crossing reduced the logistical separation between Morocco and the mainland. The transfer continued throughout August, and Hugh Thomas estimated that approximately 10,500 men had crossed from North Africa by the end of the month, with a further 9,700 arriving during September. Although the precise balance between air and sea transport during these later movements has not been established, the cumulative effect is clear. Within eight weeks of the uprising, the Nationalists had succeeded in transferring the bulk of their most experienced field army across the Strait.

As these reinforcements reached Andalucía, the character of the war in the south changed rapidly. The Army of Africa captured Mérida on 10 August, Badajoz on 14 August, and continued its advance into western Spain. The transfer that had begun with improvised transport flights and a hazardous convoy across the Strait now sustained one of the most successful military campaigns of the opening months of the Civil War.

By overcoming the obstacle through a combination of air transport, naval crossings, reconnaissance, and foreign assistance, Franco transformed a serious strategic weakness into an operational advantage. Earlier conflicts had seen aircraft transport small numbers of personnel, but the sustained movement of thousands of combat troops between Morocco and Andalucía represented an unprecedented logistical undertaking. German Junkers Ju 52 transports proved that aircraft could reinforce an army on a daily basis, even when conventional sea communications were threatened. At the same time, the convoy of 5 August showed that air power alone could not sustain an offensive. Heavy weapons, vehicles, ammunition, and specialist equipment still depended on maritime transport. Francoist accounts celebrated the Convoy of Victory as a dramatic naval triumph that shattered the Republican blockade and defeated superior enemy forces. Modern historians note that the convoy succeeded because Republican naval units were dispersed, insurgent aircraft provided reconnaissance and harassment, coastal artillery supported the crossing, and the escort took considerable risks. The Republican blockade was penetrated, but it was not destroyed. Republican warships remained active in the Strait and bombarded Algeciras only two days later.