Formally called the 3-inch Gun Motor Carriage M10, this tank destroyer was based on the M4 Sherman chassis while mounting the 3-inch gun M7 in an open-top turret. The M10 traded armor for ...

curator at the U.S. Armor & Cavalry Collection at Fort Moore. He explained the tanks which were there on D-Day were Duplex Drive Shermans. Unlike the standard M4 Sherman, they were outfitted with ...