The Junkers Ju 87 Stuka made its combat debut in 1937 with the Luftwaffe's Condor Legion during the Spanish Civil War and served the Axis forces in World War II. It was noted for its wailing sirens which were the propaganda symbol of German blitzkrieg victories of 1939-1942. The Stuka's design included several innovations, including automatic pull-up dive brakes under both wings to ensure that the aircraft recovered from its attack dive even if the pilot blacked out from the high g-forces. The JU 87 saw much service on the Russian front as an anti-tank weapon and was also used in the African desert on the Malta raids and in the Italian campaigns. Although considered obsolete within two years after the beginning of the WW II, the JU 87 went on to see action until the end of the war and enjoyed the distinction of being, besides the American Douglas Dauntless, the only mass-produced dive bomber of WW II.