The following weapons were used in the film Retreat, Hell!:
Some of the Marines can be seen with a Colt M1911A1 holstered.
The M1 Garand is the main rifle carried by US Marines in the film including PFC Jimmy McDermid (Russ Tamblyn).
M1 Garand semiautomatic Rifle with leather M1917 sling - .30-06
The M1 Carbine is used by the officers in the film.
Korean War Era M1 Carbine, with Birch Stock, Adjustable sight, bayonet lug, and twin magazine pouch. Most of the World War II variations of the M1 Carbine were sent back to the Military Arsenals and retrofitted with the Bayonet Lug and adjustable rear sight. This is the version seen after late 1945 and all the way until the 1960s. This version is seen most often in World War II movies, despite being anachronistic for most World War II battles - .30 Carbine
Browning Automatic Rifle
A few of the Marines carry the Browning Automatic Rifle.
Browning Automatic Rifle - .30-06
The Browning M1919A4 is used by Marines during the Battle of Chosin Reservoir.
Browning M1919A4 on M2 tripod - .30-06
Mk 2 Hand Grenade
Marines can be seen using the Mk 2 Hand Grenade.
Mk 2 "Pineapple" High-Explosive Fragmentation Hand Grenade
M20A1B1 "Super Bazooka"
Marines can be seen with M20A1B1 "Super Bazookas" during the battle.
M20A1B1 "Super Bazooka" - 3.5"
Mauser Gewehr 1898
Chinese soldiers use the Mauser Gewehr 1898.
Mauser Gewehr 1898 - 7.92x57mm Mauser
Type 99 Light Machine Gun
Chinese forces are also seen firing the Type 99 Light Machine Gun during an ambush.
Type 99 light machine gun - 7.7x58mm Arisaka