MC
1ST BATTALION, 12TH MARINES
U.S. Marine Corps
The 1st Battalion, 12th Marines (1/12) was activated on September 1, 1942, as part of the 3rd Marine Division during World War II. It participated in major campaigns in the Pacific Theater, including Bougainville, Guam, and Iwo Jima, providing artillery support for infantry operations. Following World War II, the battalion was deactivated and reactivated several times, serving in the Vietnam War and later in operations in the Western Pacific and the Middle East. Throughout its history, 1/12 has remained a key artillery unit of the United States Marine Corps, demonstrating versatility and combat effectiveness in a wide range of conflicts.