About this Unit
The 2nd Battalion, 23rd Marines (2/23) is a distinguished infantry battalion of the United States Marine Corps Reserve, activated during World War II in July 1942. The unit saw fierce combat in the Pacific Theater, notably participating in the pivotal battles of Roi-Namur, Saipan, Tinian, and Iwo Jima. After the war, 2/23 was deactivated but later reactivated as a reserve unit, continuing its tradition of excellence and readiness. In recent decades, 2/23 has supported numerous training, humanitarian, and operational deployments, including the Global War on Terror, upholding its legacy of valor and service.
Historical Facts
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World War II Activation: The 2nd Battalion, 23rd Marines (2/23) was activated on July 20, 1942, at Camp Elliott, San Diego, California, as part of the legendary 4th Marine Division.
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First Combat at Roi-Namur: 2/23 saw their first combat action during the Battle of Roi-Namur in the Marshall Islands in February 1944, participating in the seizure of the key Japanese air base.
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Heavy Fighting on Saipan: The battalion played a major role in the Battle of Saipan (June–July 1944), facing fierce resistance and suffering significant casualties.
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Heroism at Iwo Jima: During the Battle of Iwo Jima, 2/23 stormed ashore on D-Day (February 19, 1945) and fought in some of the bloodiest fighting of the Pacific War, including the area near Motoyama Airfield #1.
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Post-WWII Deactivation and Reactivation: The battalion was deactivated after World War II, only to be reactivated in 1962 as a reserve unit, reflecting the changing needs of the Marine Corps during the Cold War.
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Operation Desert Storm: Elements of 2/23 were mobilized for Operation Desert Storm in 1990–1991, contributing to the liberation of Kuwait.
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Support for Operation Iraqi Freedom: 2/23 deployed in support of Operation Iraqi Freedom, providing security and combat operations in Iraq in both 2003 and subsequent years.
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Humanitarian Missions: In addition to combat roles, 2/23 Marines have participated in humanitarian and disaster relief missions, including domestic hurricane relief efforts.
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Reserve Marines, Active Duty Impact: As a reserve battalion headquartered in Pasadena, California, 2/23 draws Marines from across the western United States, demonstrating the vital role of the Marine Corps Reserve in national defense.
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Notable Alumni: Several notable Marines have served in 2/23, including actor and Marine Corps veteran Dale Dye, who went on to become a famous military technical advisor in Hollywood.
