The 1st Marine Division is a major formation of the United States Marine Corps, established in 1941. It is known for its role in several key battles during World War II, including the Battle of Guadalcanal and the Battle of Iwo Jima. The division is headquartered at Marine Corps Base Camp Pendleton in California and is recognized for its rapid response capabilities. The division consists of various units, including infantry, artillery, and support elements, allowing it to conduct a wide range of military operations. It has a storied history and has participated in conflicts such as the Korean War, the Vietnam War, and more recent operations in Iraq and Afghanistan.