Background
One can put up a legitimate argument that the M4 Sherman series of tanks was the most important Allied tank of the Second World War. The initial Shermans that rolled off the production lines in large numbers had what was known as VVSS (Vertical Volute Suspension System) with two road wheels per bogie. These tanks (M4, M4A1, M4A2, M4A3, M4A4) also operated as their main armament a short-barreled 75mm gun. As WW2 progressed, and reports from the fields of battle suggested the need for various “upgrades”, the Sherman series underwent a number of small and major changes. Late in the war, there were two major changes: the introduction of HVSS (Horizontal Volute Suspension System) which incorporated four road wheels per bogie for a better vehicle ride, together with a larger turret needed to house a larger 76mm main gun. The new designation for Shermans sporting these two major changes added “E8” to the end of the Sherman nomenclature.