Korean War (1950–1953)

During the Korean War, soldiers initially used uniforms and equipment derived from World War II patterns. However, Korea's mountainous terrain and harsh winter climate quickly demonstrated the need for improved cold-weather clothing.

Uniform

The M1943 field jacket and herringbone twill uniforms remained in widespread use during the early stages of the war. Most soldiers continued to wear the M1943 field jacket until the introduction of the M1951 field jacket. The M1951, featured a zippered front and a detachable mohair frieze liner for increased warmth.

The M1951 parka and trousers provided additional protection in extreme cold. The parka featured an olive-green cotton shell, fur-lined hood (some models), and detachable liner. It was intended to replace the overcoat in winter conditions, though frontline troops often reported shortages.

Black leather gloves with wool inserts were issued, along with trigger-finger mittens designed to improve dexterity while handling weapons.

Headgear

The M1 helmet remained standard issue during the Korean War. Because many World War II surplus helmets had been sold after the war, new helmet production resumed in 1951.

Cold-weather headgear included the M1943 and M1951 pile caps, designed for wet and freezing conditions. Other headgear included the herringbone twill fatigue cap, the M1943 field cap, and the M1951 windproof field cap.

Equipment

Much of the equipment used in Korea remained similar to World War II issue. The M1945 combat and cargo pack system consisted of a combat pack for essential items and a detachable cargo pack for shelter equipment, clothing, and personal gear.

Web suspenders helped distribute the weight of the cartridge belt and packs. Soldiers also continued to use World War II-era canteens, entrenching tools, and first aid pouches with only minor modifications.

Footwear

The M1943 combat boots and shoe pacs from World War II remained in use until supplies were exhausted. They were later replaced by the M1949 combat boot, a high lace-up russet leather boot with rubber soles and heels.

In 1951, the insulated rubber combat boot—commonly nicknamed the “Mickey Mouse” boot—was introduced for use in extreme cold weather.

Weapons

The M3 submachine gun was adopted by the U.S. Army in December 1942 as a less expensive and lighter alternative to the Thompson submachine gun. Chambered in .45 ACP, it became widely known as the “Grease Gun” because of its resemblance to a mechanic’s grease gun.

The improved M3A1 variant remained in service during the Korean War and later conflicts.

The M1 knife bayonet, introduced near the end of World War II, featured a shorter 10-inch blade that replaced earlier 16-inch bayonets.