MEDIUM TANKS M4A1 WITH 75-MM. GUNS, going ashore on Kwajalein. The stacks, at the rear of the tanks, were used to extend the vented openings; unvented openings were sealed with tape and sealing compound to render the hulls watertight. Waterproofed vehicles could be operated satisfactorily in water deeper than otherwise possible, permitting them to wade in from landing craft halted at greater distances from shore.

Sherman tanks hitting the beach

An  M2A2 during maneuvers on Oahu, 1942. This light tank with twin turrets, one containing a .50-caliber machine gun and the other a .30-caliber machine gun, was first manufactured in 1935. In December 1942, when it was declared obsolete, there were 234 left in the Army. The M2A2 light tank is a good example of the type of equipment available shortly after the entry of the United States into World War II.

U.S. Light tank - M2A2

American M24 "Chaffee" light reconnoissance tank of the 14th Cavalry mechanized group in Petit-Thier, Belgium