Swept into World War I in April 1917, the U.S. military desperately needed .45 ACP handguns. Both Colt and Smith & Wesson had existing revolver designs adopted as the Model of 1917, and they would go on to serve again during World War II.
Watch this American Rifleman Television video segment "Over There! Part 7: No Finer Troops" to learn about U.S. soldiers of the 27th and 30th Infantry Divisions who fought on the Western Front under British command using British arms.
From Pearl Harbor until the Japanese surrender, the AN/M2 .50-cal. Browning machine gun served in the air, on land and at sea, and was a part of every major American battle in every theater of operations around the world. It was the unsung hero of American firepower during World War II.
Though not well known today, Winchester’s first semi-automatic rifles saw service in and above the trenches of World War I, faced big and dangerous game, and set the stage for the modern sporting rifle.
Against one or two of the enemy, mortar fire is is ineffective. The military's answer to the problem is snipers.