M-15 Multiple Gun Motor Carriage (GMC)

The M-15 Multiple Gun Motor Carriage (GMC) was a mobile anti-tank and anti-aircraft weapon based on the White M3 Halftrack. The M15 had an armored enclosure on the rear that housed a 37mm M1A2 automatic cannon plus two .50 cal. M2HB machine guns. On the M15 the machine guns were mounted above the 37mm gun, while on the M15A1 the machine guns were below.

The M-15 Multiple Gun Motor Carriage was based on the eariler T28E1 platform, eighty of which were built by Autocar in mid-1942. The T28E1 was armed with the 37mm sutomatic cannon and two .50 cal. water cooled machine guns.

The M-15 was manufactured by Autocar in early 1943 (500 built), then replaced by production of the M15A1 in late 1943 and February 1944 (1652 built). The M15A1 continued in use through the Korean War.

Recommended Book About the M-15 Multiple Gun Motor Carriage

M3 Infantry Half-Track 1940-73

M-15 Multiple Gun Motor Carriage Photos

Find additional photos and hi-res versions of the M-15 Multiple Gun Motor Carriage at the Olive-Drab Military Mashup:

M-15 Multiple Gun Motor Carriage in foreground along with the tightly packed men and vehicles of an antiaircraft artillery battalion, aboard a US Navy landing craft in an English port, just prior to D-Day invasion of Normandy, France, 6 June 1944.

443d Coast Artillery (AA) Battalion halftrack deploys outside an airdrome 1n St. Raphael, Southern France in August 1944. The M-15 Multiple Gun Motor Carriage halftrack was based on the prototype T28E1 platform, such as the one seen here. Most of the developmental T28E1s were deployed with the 443d.

M-15 Multiple Gun Motor Carriage halftrack, showing the enclosed gun turret with 37mm gun and .50 cal. machine guns, circa July 1944. The name BLIP II refers to another halftrack BLIP I mentioned in a dispatch by Ernie Pyle.

M-15A1 Multiple Gun Motor Carriage is delivered to the beach from an LCT, during invasion force training, England, circa late April to early May 1944. The M15 MGMC was a highly mobile weapon, capable of a concentration of rapid fire, and designed for antiaircraft defense.

M-15 Multiple Gun Motor Carriage (GMC) halftrack moving to a new position along the Kum River, Korea 1050. The M-15 is towing an ammunition trailer.

M-15 Multiple Gun Motor Carriage Photo Gallery

M-15 Multiple Gun Motor Carriage.

T28E1 Multiple Gun Motor Carriage, 443d Coast Artillery Regiment, Tunisia, 1942-1943.

45th Division M-15 Multiple Gun Motor Carriage (GMC) at Hampton Roads Port of Embarkation, 27 May 1943.