Tupolev SB2 M100

The Tupolev SB (SB 2M-100), a Soviet high-speed bomber, was used primarily by the Soviet Air Force during the late 1930s and early 1940s, with significant action in the Spanish Civil War (1936–1939) and the Second Sino-Japanese War (1937–1945). It was also deployed in the Winter War against Finland and in the initial stages of World War II against Germany.