Task Force 117, Riv Sed 9, Riv Div 91

Task Force 117, also known as the Mobile Riverine Force (MRF), was established in 1967 as a joint U.S. Army and Navy unit during the Vietnam War. Within this force, River Squadron 9 (RivRon 9) operated River Division 91 (RivDiv 91), conducting extensive riverine operations in the Mekong Delta. Their mission included transporting troops, providing fire support, and disrupting Viet Cong supply lines along the complex waterways. Through coordinated amphibious assaults and patrols, Riv Div 91 played a crucial role in the success of Task Force 117’s efforts to maintain control of critical river routes and bolster South Vietnamese security.