Mobile Riverine Force

The Mobile Riverine Force (MRF) was a joint U.S. Army and U.S. Navy unit formed during the Vietnam War in 1967 to conduct operations in the challenging waterways of the Mekong Delta. Utilizing a flotilla of armored boats, including monitors and troop carriers known as "Tangos," the MRF enabled rapid deployment and support of infantry units in areas inaccessible by road. The force executed a combination of amphibious assaults, patrols, and fire support missions, significantly disrupting Viet Cong operations in the region. The MRF exemplified innovative riverine warfare tactics and played a crucial role in controlling the vital waterways of South Vietnam until its dissolution in 1970.