The weapons used by the US Army Infantry and US Marine Corps in the Korean War were practically the same types that had been used during World War II. In 1950, the US soldier went to Korea armed with the reliable M1 Garand, which was a .30-caliber rifle fed with an 8-round clip; the M1 Carbine, a light weight, .30(7.62mm) accurate infantry weapon; the venerable Browning Automatic Rifle (BAR), an automatic and powerful fire arm fitted with bipod and fed from a detachable, 20-round, box magazine; and, of course, the lethal Thompson “Tommy gun” and M3 “grease gun”, which were .45-caliber sub-machine guns. The US infantry also carried to the Korean theater of operation the M2 and M1919 Browning machine guns, 60mm and 120mm mortars, hand grenades, the Colt M1911 pistol, and steely determination to fight in extremely cold weather conditions.
The M26 Pershing and M46 Patton were the main battle tanks used in Korea by the US Army and Marine Corps; M26 was a 41-ton tank, armed with a 90mm M3 rifled gun and three Browning machine guns; the M46 was an improved version of the Pershing, better-armored and fitted with a more powerful engine. But they also used light tanks, such as the M4 Sherman and the M24 Chaffee tanks, which were used in the reconnaissance and support roles. The artillery pieces deployed by the Americans in that armed conflict were the 8-in (203mm) M1 heavy howitzer, the 155mm M1 Gun, and the 105mm M2A1 field howitzer.
On the left hand, the M1 Garand, followed by the M1 Carbine; on the far right, the BAR (Browning Automatic Rifle)
The M46 Patton, which was based on the M26 Pershing
The 8 in M1 howitzer being towed by a truck