Nazi Germany's actions included the formation of the multitasking Condor Legion, a unit composed of volunteers from the Luftwaffe and the German Army ("Heer") from July 1936 to March 1939. The Condor Legion proved to be especially useful in the 1936 Battle of the Toledo. Germany moved the Army of Africa to mainland Spain in the war's early stages. German operations slowly expanded to include strike targets, most notably—and controversially—the bombing of Guernica which, on 26 April 1937, killed 200 to 300 civilians. Germany also used the war to test new weapons, such as the Luftwaffe Junkers Ju 87 Stukas and Junkers Ju-52 transport Trimotors (used also as Bombers), which showed themselves to be effective.