About the M4 Sherman Early Production With approximately 50,000 units produced during WWII, the U.S. Army's series of M4 Sherman tanks were one of the driving forces behind Allied victory. Designed for efficient mass production and including room for future modifications, the M4 series boasted superior ground performance with excellent reliability. Amongst the many variants produced, the early production M4 featured an angular shaped welded hull, a cast turret loaded with a 75mm M3 cannon and a 350hp air-cooled gasoline engine. The M4 Sherman saw action in North Africa and throughout Europe, including serving in the Normandy and Italian campaigns.