MC
1:23rd Reserve Unit
U.S. Marine Corps
The 1st Battalion, 23rd Marines (1/23rd Reserve Unit) is a distinguished infantry battalion within the United States Marine Corps Reserve. Activated during World War II, the unit saw significant combat in the Pacific Theater, notably participating in the battles of Kwajalein, Saipan, Tinian, and Iwo Jima. Since then, 1/23 has been mobilized for numerous operations, including the Gulf War, Operation Iraqi Freedom, and Operation Enduring Freedom, providing critical support and combat capabilities. Headquartered in Houston, Texas, 1/23rd continues to uphold its legacy of readiness and service as part of the 4th Marine Division.