1941 - USA M3 Medium Tank

Armament:      1 - 75mm gun
                           1 - 37mm gun
                           3 - 0.3" MG
Engine:            Wright R975, air cooled, radial
                           9 cyl. gas, 340 hp
Speed:             26 mph
Range:            120 miles
Crew:               6
Weight:            30 tons

Served with British as Gen. Grant.  Weaknesses: cramped quarters; two separate main weapons and riveted hull.  Note counterweight on short barrel 75mm gun to resolve stabilization problems.