Mobile Riverine Force
In the Vietnam War , the Mobile Riverine Force ( MRF ) ( after May 1967 ) , initially designated Mekong Delta Mobile Afloat Force , and later the Riverines , were a joint US Army and US Navy force that comprised a substantial part of the brown-water navy . 
<triplet> Mobile Riverine Force <subj> Vietnam War <obj> conflict <subj> US Army <obj> military branch <subj> US Navy <obj> military branch <triplet> US Army <subj> Vietnam War <obj> conflict <triplet> US Navy <subj> Vietnam War <obj> conflict