The M3 Lee, officially designated the Medium Tank, M3, is an American medium tank that appears in Fall of Nations. The tank was created after the U.S. and Britain needed a medium tank with a good gun and armor as soon as possible. Lees fought in North Africa and briefly in the Invasion of Italy during World War II before being withdrawn from service in late 1943 and replaced by the M4 Sherman.
"The Medium Tank, M3 'Lee' is an American medium tank designed as an interim vehicle while the M4 Sherman was being developed. Initially, the vehicle was superior to that of Axis forces before the appearance of better vehicles in 1942. It was upgraded constantly until 1945."