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M21 4.5in (114mm)

1953 COLD WAR KOREAN WAR

History

During World War II, portable rocket launchers were adopted by the Allies, Germany, and the Soviet Union, becoming feared weapons on the battlefield. The Soviets, particularly on the Eastern Front, heavily utilized bazookas and conventional artillery to devastate German ranks. The Germans had the "Nebelwefer," and the Allies employed the "Landmatress." These unguided rocket launchers had a significant impact on enemy forces.

With the onset of the Korean War in 1950, the outdated WWII weapons of the United States prompted the development of the M21 4.5-inch multiple rocket launcher. Introduced in 1953, this electric, reusable system featured five rows of five tubes, forming a launch tube "wall." Operating with a minimum of two crew members, the M21 could rapidly load 25 rockets per tube, weighing 38 pounds each with a range of up to 5,000 yards.

Deployed in the Korean War, the M21 played a pivotal role for the U.S. Marine Corps and Army Special Regular Forces. Its ability to saturate enemy areas with high-explosive missiles, quick firing capabilities, and versatility in handling large formations of vehicles showcased its effectiveness in combat, solidifying its reputation as an impactful and reliable weapon system.

M21 4.5" (114 mm) Specification

Basics

Years of Service: 1953

Origins: United States

Crew: 4

Production: 1,200

Manufacturer: Rock Island Arsenal - USA

Operators: United States

Weapon: 25 x 4.5 in (114.3 mm) tube

Roles

Fire Support/Attack/Breakthrough

Support allied forces with direct/indirect fire, attacking forward positions and/or breaking through fortified areas of the battlefield. A special design created to play an equally special role on the battlefield.