WWII Sherman Tank
General Patton Memorial Museum, California.
Entering combat in October 1942, the first Shermans saw action with the British Army at the Second Battle of El Alamein. The first US Shermans saw combat the following month in North Africa. When the Sherman first entered service, it was superior to the German tanks it faced in North Africa and remained at least on par with the medium Panzer IV series throughout the war.
With the landings in Normandy in June 1944, it was found that the Sherman's 75mm gun was incapable of penetrating the front armor of the heavier German Panther and Tiger tanks. This led to the rapid introduction of the high velocity 76mm gun. Even with this upgrade, it was found that the Sherman was only capable of defeating the Panther and Tiger at close range or from the flank. Utilizing superior tactics and working in conjunction with tank destroyers, American armor units were able overcome this handicap and achieved favorable results on the battlefield.