About this Unit
River Division 532 (RIVDIV 532) was a unit within the U.S. Navy's Mobile Riverine Force during the Vietnam War. Established in the late 1960s, RIVDIV 532 operated heavily armored river patrol boats (PBRs) and monitors, conducting combat and patrol operations along the Mekong Delta's complex waterways. The division played a crucial role in Operation Game Warden and other missions, providing fire support, troop transport, and interdiction of Viet Cong supply lines. RIVDIV 532 was renowned for its adaptability in the challenging riverine environment, contributing significantly to U.S. efforts to control the delta and disrupt enemy activity.
Historical Facts
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Formation and Purpose: River Division 532 (RIVDIV 532) was one of the U.S. Navy’s Mobile Riverine Force units, established during the Vietnam War to patrol and control the Mekong Delta’s complex network of rivers and canals.
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Part of the Brown Water Navy: RIVDIV 532 was part of the so-called "Brown Water Navy," specializing in riverine combat operations distinct from the "Blue Water" (open ocean) fleet.
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Primary Vessels: The unit operated heavily armed Patrol Boat, River (PBRs), Armored Troop Carriers (ATCs or “Tangos”), and Monitor gunboats to transport troops and provide fire support.
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Joint Operations: RIVDIV 532 often worked closely with the 9th Infantry Division (U.S. Army), conducting joint riverine assaults and search-and-destroy missions against Viet Cong forces.
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Base of Operations: The division was primarily based out of Dong Tam and various mobile riverine bases, which allowed rapid deployment throughout the Delta region.
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Operation Giant Slingshot: RIVDIV 532 participated in Operation Giant Slingshot, a major effort to interdict Viet Cong supply lines in the “Parrot’s Beak” region near the Cambodian border.
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Innovative Tactics: The unit adapted to the unique environment by developing tactics for ambushes, night patrols, and quick-reaction support, often facing intense enemy fire from hidden shoreline positions.
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Medals and Citations: Members of RIVDIV 532 received numerous awards for valor, including Navy Crosses, Silver Stars, and Bronze Stars, reflecting the division’s high level of engagement and bravery.
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Casualties and Sacrifice: RIVDIV 532 sustained significant casualties due to frequent engagements in hostile territory, shallow waters, and exposure to mines and ambushes.
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Legacy: The unit’s service contributed to the development of modern riverine warfare tactics and is commemorated by veterans’ organizations and reunions, preserving its legacy within U.S. Navy history.
