Doctrine As the US approached entry in World War II, armored employment was doctrinally governed by FM 100-5 Operations (published May 1941, the month .\rbr\rbrThe M4 Sherman Tank was a fast and reliable medium tank that served the Allies during WWII. This versatile tank operated in every theater of operation during .\rbr\rbrThe most produced tank in ww2 with 50000 units.\rbr\rbrLets check the interiors of an M4 Sherman WWII Tank. Still functioning and driving around. The same tank of the Fury movie, starring Brad Pitt. Do you like my .