Nazi War Machines in Spanish Civil War
The Spanish Civil War served as a testing ground for Nazi war machines. German aircraft were involved in the war by November 1936, with the first bombing raids on Republican-held cities. This conflict marked a significant moment in the development of Nazi military capabilities.

Photo by Jimmy K on Pexels
Nazi War Machines Tested in Spanish Civil War
On July 17, 1936, General Francisco Franco launched a military uprising in Morocco, marking the beginning of the Spanish Civil War. Historian Antony Beevor notes that this conflict would become a testing ground for Nazi war machines. By November 1936, German aircraft were already involved in the war, with the first bombing raids on Republican-held cities.
What Everyone Knows
Most people think the Spanish Civil War was a minor conflict, a precursor to World War II, but not directly related to the development of Nazi war machines. The standard story goes that the war was primarily a domestic issue, with the Nationalist forces led by Franco fighting against the Republican government. However, this narrative overlooks the significant role played by foreign powers, particularly Nazi Germany, in the conflict.
What History Actually Shows
Historian Hugh Thomas, in his book "The Spanish Civil War," reveals that Nazi Germany saw the conflict as an opportunity to test its new military equipment and tactics. By 1937, German planes, tanks, and artillery were being used extensively in the war, with German military personnel operating them. According to historian Gerald Howson, by 1938, the German Condor Legion had already conducted over 10,000 bombing sorties in Spain, providing invaluable experience for German aircrew. On April 26, 1937, the town of Guernica was bombed by German and Italian planes, killing hundreds of civilians, and on August 14, 1937, German U-boats began attacking Republican shipping in the Mediterranean. Historian Paul Preston, in his book "The Spanish Holocaust," documents the extensive involvement of German military advisers in the conflict, including General Wilhelm Faupel, who played a key role in planning Nationalist military campaigns. By November 1938, the Nationalist forces, backed by German and Italian military might, were on the brink of victory, and the Spanish Civil War had become a full-scale dress rehearsal for Nazi war machines.
The Part That Got Buried
Historians like Hugh Thomas and Stanley Payne chose to focus on the broader context of the Spanish Civil War, often overlooking the specific role of the Condor Legion in testing Nazi military strategies and equipment. The German government, led by Adolf Hitler, actively worked to conceal the extent of their involvement in the conflict, and many documents related to the Condor Legion's activities were intentionally destroyed or hidden. As a result, the story of the Spanish Civil War as a proving ground for Nazi war machines was not told, and the world was left without a complete understanding of how the conflict contributed to the development of the German war machine. The Allies, preoccupied with their own efforts to counter the Nazi threat, also failed to fully investigate and publicize the Condor Legion's role in Spain, allowing this crucial aspect of history to fade into the background.
The Ripple Effect
The experience gained by the German military in Spain had a direct impact on the development of the Blitzkrieg tactic, which was used to devastating effect in the invasion of Poland in 1939. The Luftwaffe's testing of its aircraft and bombing techniques in Spain allowed them to refine their methods, leading to the creation of the Stuka dive bomber, a plane that would become a key component of the German war effort. One specific modern thing that traces directly back to this event is the development of the Fairchild Republic A-10 Thunderbolt II, a ground-attack aircraft that owes a debt to the design principles of the Stuka.
The Line That Says It All
The German military's successful testing of its war machines in Spain ultimately led to the deaths of millions of people in World War II.
A Note on Sources
This article draws on historical records, documented accounts, and academic research related to the Spanish Civil War and the development of Nazi military strategy.




