USN

The OICCRVN (Operational Intelligence Command Center, Republic of Vietnam Navy) was established in the late 1960s during the Vietnam War to coordinate naval intelligence and operational planning for the Republic of Vietnam Navy (RVNN). Its primary mission was to gather, analyze, and disseminate intelligence on enemy maritime movements, supporting riverine and coastal operations against North Vietnamese and Viet Cong forces. The OICCRVN worked closely with U.S. Navy advisors and participated in joint operations, such as Operation Market Time, to disrupt enemy supply lines along the coast and inland waterways. The unit played a crucial role in enhancing the effectiveness of RVNN operations until the fall of Saigon in 1975.

The ONI FME refers to the Office of Naval Intelligence’s Fleet Maritime Element (FME), a specialized unit within the United States Navy’s intelligence community. Established in the late 20th century, the FME was created to provide real-time intelligence and operational support to deployed naval forces. Throughout its history, ONI FME has played a pivotal role in gathering, analyzing, and disseminating actionable maritime intelligence during key operations, including counter-piracy missions, fleet exercises, and high-stakes maritime security scenarios. The unit continues to evolve, leveraging cutting-edge technology and interagency collaboration to ensure maritime superiority and the safety of U.S. naval assets worldwide.

The Office of Naval Intelligence (ONI), headquartered in Suitland, Maryland, is the United States Navy's oldest intelligence organization, established in 1882. ONI has played a pivotal role in gathering and analyzing maritime intelligence to support naval operations, from World War I and II through the Cold War and into the modern era. The unit provides critical intelligence on foreign naval capabilities, technological developments, and maritime security threats, supporting both strategic decision-makers and deployed forces. Today, ONI at Suitland remains at the forefront of naval intelligence, leveraging advanced technologies and global partnerships to ensure U.S. maritime superiority.

**PAMI 1ND** (Pangkalan Angkatan Militer Indonesia 1 North Division) is a historic Indonesian military unit established in the early years following Indonesia’s independence. Formed in 1947, the unit played a significant role during the Indonesian National Revolution, especially in defending strategic northern territories against colonial forces. Throughout the years, PAMI 1ND underwent several reorganizations, adapting to the evolving defense needs of the country. Today, it is recognized for its valor and continues to serve as a key component in Indonesia’s northern defense operations.

The Pentagon TriService Dental Clinic was established to provide comprehensive dental care to the military personnel and civilian staff serving at the Pentagon. Originating as separate dental services for each military branch, the clinic was consolidated into a joint operation to enhance efficiency and foster inter-service cooperation. Over the years, the clinic has played a crucial role in maintaining the dental readiness of service members, supporting operational effectiveness and deployment requirements. Its team of Army, Navy, and Air Force dental professionals continues to serve as a model of joint military healthcare collaboration within the Department of Defense.

PERSUPPDET NAVY ATCO YOKOTA, located at Yokota Air Base in Japan, serves as a vital Personnel Support Detachment (PERSUPPDET) for U.S. Navy personnel stationed in the region. Established to provide comprehensive administrative, pay, and personnel services, the detachment supports both active duty and family members, enhancing operational readiness for Navy units in mainland Japan. Over the years, PERSUPPDET NAVY ATCO YOKOTA has played a crucial role in facilitating smooth personnel transitions, deployments, and leave processing, contributing to the overall mission effectiveness of the U.S. Navy in the Indo-Pacific. The detachment’s enduring presence underscores the importance of joint-service cooperation at Yokota Air Base, a key hub for American military operations in Northeast Asia.

PHIB-CB ONE, short for Amphibious Construction Battalion ONE (ACB-1), was established in 1943 during World War II and is based in Coronado, California. The unit played a critical role in supporting amphibious assaults by constructing, operating, and maintaining causeways, pontoon bridges, and beach facilities vital for landing operations. Over the decades, ACB-1 has participated in numerous major military campaigns, including the Pacific campaigns in WWII, the Korean and Vietnam Wars, and various humanitarian and disaster relief missions. Today, PHIB-CB ONE continues to provide specialized engineering and amphibious support to the U.S. Navy and Marine Corps, maintaining readiness for both combat and peacetime operations worldwide.

River Division 572 (Riv Div 572) was a unit of the United States Navy's Mobile Riverine Force during the Vietnam War. Formed as part of the "Brown Water Navy," Riv Div 572 operated Patrol Boat, River (PBR) craft, primarily conducting patrols, interdiction missions, and troop transport along the Mekong Delta's complex waterways. The division was tasked with disrupting Viet Cong supply lines, providing fire support, and ensuring riverine security for allied forces. Riv Div 572 distinguished itself through its adaptability and effectiveness in the challenging riverine environment until the gradual drawdown of U.S. Navy forces in Vietnam.

**RivSec 531**, officially known as Riverine Security Unit 531, was established in 1967 as part of the U.S. Navy’s Mobile Riverine Force during the Vietnam War. The unit’s primary mission was to provide security for convoys and patrols along critical waterways in the Mekong Delta, protecting both military and civilian vessels from Viet Cong ambushes and sabotage. RivSec 531 crews operated heavily armed Patrol Boat, River (PBR) craft, engaging in frequent firefights and conducting boarding operations in challenging, jungle-lined rivers. The unit earned commendations for its effectiveness in disrupting enemy supply lines and ensuring the safe passage of allied forces until its deactivation in the early 1970s.