The Condor Legion was a unit composed of volunteers from the German

Nazi Germany

Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 Air Force (Luftwaffe

Luftwaffe

Luftwaffe is a generic German term for an air force. It is also the official name for two of the four historic German air forces, the Wehrmacht air arm founded in 1935 and disbanded in 1946; and the current Bundeswehr air arm founded in 1956....

) and from the German Army (Wehrmacht Heer) which served with the Nationalists

National Faction (Spanish Civil War)

The National faction also known as Nationalists or Nationals , was a major faction in the Spanish Civil War of 1936 to 1939. It was composed of a variety of political groups opposed to the Second Spanish Republic, including the Falange, the CEDA, and two rival monarchist claimants: the Alfonsists...

 during the Spanish Civil War

Spanish Civil War

The Spanish Civil WarAlso known as The Crusade among Nationalists, the Fourth Carlist War among Carlists, and The Rebellion or Uprising among Republicans. was a major conflict fought in Spain from 17 July 1936 to 1 April 1939...

 of July 1936 to March 1939. The Condor Legion developed methods of terror bombing which were used widely in the Second World War shortly afterwards. The bombing of Guernica

Bombing of Guernica

The bombing of Guernica was an aerial attack on the Basque town of Guernica, Spain, causing widespread destruction and civilian deaths, during the Spanish Civil War...

 was the most infamous operation carried out by the Condor Legion during this period.