U.S. Army

The 490th Combat Support Unit was activated during the Vietnam War to provide vital logistical and operational support to U.S. and allied forces stationed in and around Da Nang, Vietnam. Established in the late 1960s, the unit was responsible for supply distribution, vehicle maintenance, and base security operations, ensuring smooth daily functioning of military activities in the region. The 490th played a crucial role during major offensives, including the Tet Offensive, by maintaining uninterrupted support under challenging combat conditions. After years of dedicated service, the unit was deactivated following the drawdown of American forces in Vietnam in the early 1970s.

**493rd Military Unit History** The 493rd, often referred to as the 493rd Fighter Squadron ("Grim Reapers"), was originally activated during World War II as part of the United States Army Air Forces. The unit saw its early combat action in the European Theater, conducting bomber escort missions and air superiority operations. After the war, the squadron experienced several activations and inactivations, eventually becoming part of the United States Air Force. In the modern era, the 493rd has been based at RAF Lakenheath in the United Kingdom, flying advanced fighter aircraft such as the F-15C Eagle and maintaining a critical role in NATO air defense and rapid response missions.

The 4th Dental Battalion is a unit of the United States Marine Corps Reserve, activated on 1 November 1979. It provides dental care and support to Marine Corps and Navy personnel, ensuring operational readiness through oral health. Headquartered in Marietta, Georgia, the battalion is comprised of multiple dental companies and detachments across the eastern United States. The 4th Dental Battalion has supported numerous training exercises and deployments, including overseas operations such as Operation Iraqi Freedom, delivering critical dental services in both combat and humanitarian missions.

The 5th Battalion, 25th Field Artillery Regiment (5/25th FA) traces its lineage to the original 25th Field Artillery, constituted in 1918. Reactivated and redesignated several times throughout the 20th century, the 5/25th FA has served in a variety of roles, including as a key artillery support element within larger infantry and armored divisions. The unit saw action during the Cold War era, providing fire support and training for rapid deployment. In more recent years, 5/25th FA has contributed to operations in the Middle East, supporting both combat and peacekeeping missions before its inactivation or reassignment as part of Army restructuring.

The 502nd Transportation Company was activated during World War II to provide critical logistical support, specializing in the movement of supplies and personnel. Throughout its history, the unit has been deployed in major conflicts, including the Korean War, Vietnam War, and Operations Desert Shield and Desert Storm, ensuring sustained operations for combat forces. The 502nd has earned commendations for its efficiency and reliability under challenging conditions, often operating in hostile environments. Today, the unit continues to serve as a vital component of the U.S. Army’s transportation corps, supporting missions at home and abroad.

The 503rd Adjutant General (AG) Company is a U.S. Army unit specializing in human resources and administrative support. Activated during the Global War on Terror, the 503rd AG has provided critical personnel services, including postal operations, casualty reporting, and strength management for deployed forces. The unit has served in various theaters, supporting both combat and humanitarian missions, ensuring accurate personnel accountability and morale support. Through its deployments and dedicated service, the 503rd AG Company has played a key role in sustaining Army operations and mission readiness.

The 507th Parachute Infantry Regiment (507th PIR) was activated in July 1942 at Fort Benning, Georgia, as part of the U.S. Army’s growing airborne forces during World War II. The regiment first saw combat during the D-Day landings on June 6, 1944, as part of the 82nd Airborne Division, parachuting into Normandy, France, and engaging in intense fighting around Sainte-Mère-Église. Later, the 507th participated in Operation Varsity, the airborne assault across the Rhine River into Germany in March 1945, now attached to the 17th Airborne Division. The unit earned a distinguished record for bravery and effectiveness before being inactivated after the war.

The 50th Signal Battalion, assigned to the XVIII Airborne Corps, traces its origins back to World War II, when it was constituted in 1940 and activated in 1941 to provide critical communications support. Throughout its history, the unit has played a vital role in enabling command and control for airborne and rapid deployment operations, participating in major conflicts including World War II, Operation Desert Storm, Operation Iraqi Freedom, and Operation Enduring Freedom. Stationed at Fort Liberty (formerly Fort Bragg), North Carolina, the battalion is renowned for its technical expertise and ability to deploy worldwide on short notice. Today, the 50th Signal Battalion continues to ensure secure and reliable communications for the XVIII Airborne Corps and its subordinate units, exemplifying its motto: "The Voice of the Corps."

**514th / 36th Combat Support Hospital – Short Military History:** The 514th Combat Support Hospital, later designated as the 36th Combat Support Hospital (CSH), is a U.S. Army Reserve medical unit with a distinguished legacy of providing comprehensive medical support to deployed forces. Originally activated during World War II, the hospital has served in multiple major operations, including Operation Desert Storm and Operation Iraqi Freedom, delivering critical care in austere combat environments. The unit specializes in trauma stabilization, surgical intervention, and patient evacuation, ensuring the health and readiness of warfighters. Throughout its history, the 514th / 36th CSH has earned numerous commendations for excellence in medical service and operational effectiveness.

The 525th Signal Company is a U.S. Army unit with a distinguished history of providing communications support. Activated during World War II, the company played a crucial role in establishing and maintaining signal operations in various theaters of conflict. Over the decades, the 525th Signal Co has supported numerous operations, including deployments during the Cold War, Vietnam War, and in more recent conflicts in the Middle East. The unit is recognized for its technical expertise and ability to ensure reliable battlefield communications under challenging conditions.

The 526th Military Police Detachment (526th MP DET) is a specialized unit within the United States Army Military Police Corps. Activated during the mid-20th century, the detachment has provided law enforcement, security, and force protection on both domestic installations and overseas deployments. Over its history, the 526th MP DET has supported major operations, including peacekeeping missions and contingency operations in areas such as Europe and the Middle East. Renowned for its professionalism and adaptability, the unit continues to uphold the Army’s standards in military policing, safeguarding personnel and resources wherever assigned.

The 530th Combat Engineers was first activated during World War II, tasked with providing crucial engineering support for Allied operations in the European Theater. The unit was responsible for constructing bridges, clearing minefields, and repairing roads under enemy fire, often enabling rapid advances for infantry and armored divisions. After the war, the 530th continued to serve in various capacities, including disaster relief and infrastructure projects during peacetime. The legacy of the unit is marked by its adaptability and bravery in overcoming some of the most challenging battlefield conditions.

The 53rd Support Battalion was activated during the Vietnam War to provide critical logistical and maintenance support to frontline combat units. Tasked with the delivery of supplies, vehicle repair, and medical evacuation, the battalion played a vital role in sustaining the operational effectiveness of its parent brigade. Over the years, the 53rd Support Battalion has adapted to evolving military needs, deploying in various theaters and participating in humanitarian missions. Its dedication to service and mission accomplishment has earned it multiple commendations and recognition within the Army support community.

The 54th Aviation Company was a U.S. Army aviation unit activated in the late 1950s, originally tasked with providing aerial reconnaissance and utility support. The unit gained distinction during the Vietnam War, where it operated primarily with light observation and utility helicopters, supporting combat operations, troop movements, and supply missions. Known for their adaptability and courage under fire, the 54th Aviation Company played a crucial role in gathering intelligence and providing air mobility in challenging environments. After the Vietnam War, the company continued to serve in various capacities until its eventual deactivation.

The 553rd Engineer Detachment, based at Fort Drum, New York, has a distinguished history of providing specialized engineering support to U.S. Army operations. Activated during the Cold War era, the detachment has been instrumental in tasks such as construction, route clearance, and infrastructure development both at home and during overseas deployments. The unit has supported major training exercises at Fort Drum and contributed to humanitarian missions and contingency operations abroad. Through adaptability and technical expertise, the 553rd Engineers have played a vital role in enhancing operational readiness and mission success for Army forces.

The 553rd Heavy Equipment Maintenance Company was activated during the Vietnam War to provide critical maintenance and repair support for heavy military vehicles and equipment. Stationed primarily in the Republic of Vietnam, the unit ensured the operational readiness of armored vehicles, trucks, and engineering machinery vital for combat and construction missions. The 553rd worked under challenging conditions, often deploying mobile teams to forward areas to keep vehicles in action. Their efforts were essential in sustaining mobility and effectiveness for U.S. Army units throughout the conflict.

The 559th GS (General Support) is a military unit with a history rooted in providing essential logistical and maintenance support to larger operational forces. Established to ensure combat readiness, the unit has been tasked with repairing, servicing, and supplying vehicles, equipment, and materiel in various theaters of operation. Throughout its service, the 559th GS has played a vital role in sustaining mission effectiveness, often deploying alongside combat units to maintain operational tempo. Over the years, the unit has adapted to evolving technologies and warfare demands, consistently upholding a reputation for reliability and excellence in support operations.

The 55th Maintenance Battalion was first constituted during World War II, activated on 17 July 1942 at Camp Gruber, Oklahoma. Throughout its history, the battalion has provided critical maintenance and logistical support to U.S. Army units, ensuring operational readiness of vehicles and equipment during major conflicts, including the Vietnam War. The unit has undergone several reorganizations and redesignations, adapting to evolving Army needs and technologies. Today, the legacy of the 55th Maintenance Battalion is reflected in its continued commitment to excellence in sustainment operations and support to combat forces.

The 563rd Engineer Battalion was constituted on 5 June 1943 in the Army of the United States and activated on 20 August 1943 at Camp Claiborne, Louisiana. During World War II, the battalion provided essential combat engineering support in the European Theater, participating in campaigns such as Normandy, Northern France, Rhineland, Ardennes-Alsace, and Central Europe. After the war, the unit was inactivated in 1946, but later reactivated and redesignated over the decades, serving under various commands and locations, including periods as a part of the U.S. Army Reserve. Today, the 563rd Engineer Battalion continues its tradition of excellence, supporting both combat and humanitarian missions as part of the U.S. Army’s engineer forces.

The 563rd Military Police Company (563rd MP Co.) has a distinguished history of providing law enforcement, security, and combat support to U.S. Army operations. Activated during World War II, the unit participated in key campaigns in the European Theater, supporting Allied advances and maintaining order in liberated territories. Over the decades, the 563rd MP Co. has deployed to numerous conflict zones, including Korea, Vietnam, and the Middle East, adapting to evolving military police roles. Renowned for its professionalism and versatility, the company continues to uphold its legacy in both domestic and overseas missions.

The 57th Maintenance Company (Light) (Direct Support), often designated as 57th Maint. Co (LT) (DS), has a distinguished history providing critical maintenance and logistical support to U.S. Army forces. Activated during the Cold War era, the unit played a vital role in ensuring the operational readiness of vehicles and equipment for combat and support units. Throughout its service, the 57th supported numerous training exercises, deployments, and contingency operations, both in the United States and overseas. Known for technical expertise and adaptability, the company contributed significantly to mission success by keeping Army assets combat-ready in diverse environments.

The 575th Engineer Battalion (Construction) is a unit within the United States Army Reserve, specializing in construction and engineering support. Originally constituted during World War II, the battalion has provided essential engineering services such as infrastructure construction, route clearance, and facility maintenance for both combat and humanitarian missions. Over the decades, the 575th has supported operations both domestically and overseas, including deployments in support of Operation Iraqi Freedom and disaster relief efforts within the United States. The battalion’s diverse capabilities have made it a critical asset in supporting military and civil engineering projects worldwide.

The 591st Engineer Company was originally constituted during World War II, activated in 1942 as part of the U.S. Army Corps of Engineers. The unit played a critical role in constructing airfields, bridges, and supply routes in the European Theater, supporting Allied advances across France and Germany. After the war, the 591st was deactivated and later reactivated for service in the Vietnam War, where its engineers built and maintained vital infrastructure under combat conditions. In the decades since, the 591st Engineering unit has continued to serve in various capacities, supporting both combat and humanitarian missions worldwide.

The 593rd Engineer Company was originally constituted during World War II and activated in 1942 as part of the U.S. Army Corps of Engineers. The unit supported Allied operations in the European Theater, providing essential construction, bridging, and mobility support. Over the decades, the 593rd Engineers have participated in numerous conflicts and operations, including deployments to Korea, Vietnam, and the Middle East. Today, the unit continues to serve as a vital component of the U.S. Army’s engineering capabilities, specializing in combat engineer missions and support to both combat and humanitarian operations worldwide.