F. HEINZ

Casual Company/MP Company, based in San Diego, CA, has played a pivotal support role within the United States Marine Corps. Traditionally, "Casual Company" refers to units tasked with the administration, processing, and temporary holding of Marines in transit, awaiting reassignment, or facing administrative separation. Integrated with Military Police (MP) functions, the unit has provided essential law enforcement, security, and discipline services aboard Marine Corps Recruit Depot San Diego and surrounding installations. Over the years, the Casual Company/MP Company has contributed to the smooth operation of recruit training, base security, and the overall readiness of the command.

The 3rd Battalion, 4th Marines (3/4), known as "Thundering Third," is an infantry battalion of the United States Marine Corps with a storied history dating back to its activation in 1925. The battalion saw extensive combat in World War II, participating in major battles such as Guadalcanal, Guam, and Okinawa. During the Vietnam War, 3/4 earned distinction in numerous operations, including the famous seizure of Hill 881 during the Battle of Khe Sanh. In the 21st century, 3/4 deployed multiple times in support of Operations Iraqi Freedom and Enduring Freedom, continuing its legacy of valor and adaptability.