Camp Pendleton is a major United States Marine Corps base located in southern California, near the city of Oceanside. Established in 1942, it covers approximately 125,000 acres and serves as a key training facility for Marines. The base is home to various units, including the 1st Marine Expeditionary Force, and supports a wide range of military operations. The base features diverse terrain, including beaches, hills, and canyons, making it ideal for training exercises. In addition to military functions, Camp Pendleton also provides support services for Marines and their families, including housing, education, and recreational facilities.