Marine River Detachment

The Marine River Detachment is a specialized unit within the United States Marine Corps, tracing its origins to the amphibious reconnaissance and riverine operations of the Vietnam War era. Tasked with operating small craft in inland waterways, the unit became vital for patrolling, interdiction, and supporting ground forces in challenging riverine environments. Over the years, the detachment refined its expertise in shallow-water navigation, boarding operations, and providing security for critical riverine infrastructure. Today, Marine River Detachments continue to serve as a flexible force multiplier, supporting expeditionary and special operations missions in littoral and riverine theaters worldwide.