Eastern Front

Eastern Front (1941) is a computer wargame for the Atari 8-bit family created by Chris Crawford in 1981 and released by the Atari Program Exchange (APX). Recreating the Eastern Front during World War II, Eastern Front covers the historical area of operations during the 1941–1942 period. The player commands German units at the corps level as they invade the Soviet Union in 1941 and fight the computer-controlled Russians. The game simulates terrain, weather, supplies, unit morale, and fatigue.
Eastern Front was among APX's best selling games of all time, ultimately selling over 60,000 copies. It was widely lauded in the press, won Creative Computing's Game of the Year award in 1981, and was licensed by Atari for distribution on game cartridge.