About this Unit
The 1st Battalion, 23rd Marines (1/23) is a distinguished infantry battalion in the United States Marine Corps Reserve, originally activated in November 1942 during World War II. The unit participated in key Pacific campaigns, including Roi-Namur, Saipan, Tinian, and Iwo Jima, earning a reputation for tenacity and valor. Reactivated and reorganized through subsequent decades, 1/23rd Marines have supported operations such as Desert Storm, Iraqi Freedom, and Enduring Freedom. Today, headquartered in Houston, Texas, 1/23rd continues to provide trained combat-ready Marines in support of both national defense and community missions.
Historical Facts
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Origins in World War II: The 1st Battalion, 23rd Marines (1/23) was activated on July 20, 1942 at New River, North Carolina, as part of the 4th Marine Division during World War II.
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Battle of Roi-Namur: 1/23 participated in its first major combat operation during the Battle of Roi-Namur in the Marshall Islands, seizing the strategically important airfield from Japanese forces in February 1944.
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Saipan and Tinian Campaigns: The battalion played key roles in the battles for Saipan and Tinian, facing fierce resistance and sustaining heavy casualties, but helping secure these islands for the Allied advance.
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Iwo Jima Heroics: During the iconic Battle of Iwo Jima, 1/23 was among the units that stormed the beaches and fought in the grueling campaign, contributing to the capture of Mount Suribachi.
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Deactivation and Reactivation: After World War II, 1/23 was deactivated in November 1945, but was later reactivated as a reserve unit in July 1962, reflecting the changing needs of the Marine Corps.
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Operation Desert Storm: In 1990-1991, 1/23 was mobilized and deployed to Southwest Asia in support of Operation Desert Shield and Operation Desert Storm, earning commendations for their service.
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Global War on Terror: Since 9/11, 1/23 has deployed multiple times in support of Operation Iraqi Freedom and Operation Enduring Freedom, contributing to combat operations and security missions in Iraq and Afghanistan.
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Civil Support Roles: The battalion has also responded to domestic crises, such as providing humanitarian assistance during Hurricane Katrina in 2005, showcasing their versatility beyond combat roles.
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Notable Members: Several Marines from 1/23 have gone on to distinguished careers, including Medal of Honor recipients and leaders in both military and civilian life.
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“Texas’ Own” Battalion: 1/23 is known as “Texas’ Own” because its headquarters and several companies are based in Texas, drawing many of its Marines from the Lone Star State and fostering a unique esprit de corps.
