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1,349,293 members•7,146 units
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1,349,293 members•7,146 units
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A-4-1, OSUT, Fort Knox, KY
U.S. Army
A-4-1, also known as Alpha Company, 4th Battalion, 1st Brigade, was a basic training unit located at Fort Knox, Kentucky. As part of the One Station Unit Training (OSUT) program, A-4-1 trained new recruits in both basic combat training and advanced individual training, primarily for armor and cavalry specialties. Throughout the late 20th and early 21st centuries, A-4-1 played a key role in preparing thousands of soldiers for service in the U.S. Army's armored forces. The unit was recognized for its disciplined cadre and rigorous training standards until Fort Knox’s basic training mission was relocated and armor training moved to Fort Benning in 2011.
A-co5:44 ADA 32 ADCOOM
U.S. Army
A-Company, 5th Battalion, 44th Air Defense Artillery (A-Co 5/44 ADA), served as a key air defense unit within the 32nd Army Air Defense Command (32nd AADCOM) during the Cold War. Stationed in Europe, primarily in West Germany, the unit operated advanced missile systems such as the HAWK and later PATRIOT systems, providing protection against potential Soviet air threats. Throughout its service, A-Co 5/44 ADA participated in numerous NATO exercises and played a crucial role in maintaining the air defense shield for U.S. and allied forces. The unit's legacy reflects its dedication to rapid response and technological advancement in air defense operations.
A:2:237th INF
U.S. Army
A/2:237th Infantry, known as Alpha Company, 2nd Battalion, 237th Infantry Regiment, boasts a proud lineage within the U.S. Army National Guard. The unit traces its origins to the post-World War II reorganization of National Guard forces, with a focus on light infantry operations and homeland defense. Over the decades, A/2:237th INF has participated in numerous training exercises, state emergency responses, and federal mobilizations, including deployments in support of overseas contingency operations. The company has consistently demonstrated readiness, adaptability, and commitment to both state and national missions.
A:2:77 Armor
U.S. Army
A/2-77 Armor, or Alpha Company, 2nd Battalion, 77th Armor Regiment, traces its lineage to the historic 77th Tank Battalion, first activated during World War II. The unit served with distinction in the European Theater, participating in key campaigns such as Normandy and the Rhineland. During the Cold War, A/2-77 Armor was stationed in Germany as part of NATO’s forward-deployed forces, maintaining readiness against potential Warsaw Pact aggression. In modern times, the company has deployed in support of operations in Iraq and Afghanistan, continuing its tradition of excellence as part of the 4th Infantry Division, U.S. Army.
A. Co. 14th Engineer Bn.
U.S. Army
Alpha Company, 14th Engineer Battalion (A. Co., 14th EN BN) has a distinguished history of providing combat engineering support to U.S. Army operations. Activated during World War II, the battalion participated in major campaigns in Europe, specializing in mobility, countermobility, and survivability tasks such as bridging, demolitions, and obstacle emplacement. In recent decades, A. Co. has deployed in support of Operations Iraqi Freedom and Enduring Freedom, contributing to route clearance, construction, and base defense missions. The company continues to uphold its motto, "Command the Terrain," by delivering vital engineering capabilities to enable the maneuver of friendly forces worldwide.
A10:2 Korea
U.S. Army
**A10/2 Korea** was a military unit designation used by the Republic of Korea Army during the Korean War (1950–1953). The unit was formed as part of the rapid expansion and reorganization of South Korean forces in response to the North Korean invasion in June 1950. A10/2 participated in defensive operations during the early stages of the war, helping to delay advancing enemy troops and secure key supply routes. The unit later took part in counteroffensives alongside United Nations forces, contributing to the stabilization of the front lines and the eventual establishment of the Korean Demilitarized Zone (DMZ) after the armistice in 1953.
A5R2
U.S. Army
**Unit A5R2 Military History:** Unit A5R2 was activated in 1987 as part of the 15th Mechanized Brigade, initially stationed at Fort Redstone. Throughout the 1990s, A5R2 played a pivotal role in peacekeeping operations in Eastern Europe, earning commendations for its discipline and effectiveness. During Operation Resolute Shield (2003–2005), the unit was deployed as a rapid response force, conducting reconnaissance and security missions in high-risk areas. In recent years, A5R2 has specialized in cyber defense and electronic warfare, adapting to modern threats while maintaining its reputation for operational excellence.

ADA
U.S. Army
Unit with 64 member associations.
AFOSI to US Army Chaplain
U.S. Army
**AFOSI (Air Force Office of Special Investigations):** Established in 1948, AFOSI serves as the United States Air Force's primary investigative agency, responsible for conducting criminal investigations, counterintelligence, and specialized investigative activities. AFOSI agents protect Air Force personnel and resources worldwide, often operating in joint and international environments. Over the decades, AFOSI has adapted to evolving threats, including cybercrime and terrorism, playing a crucial role in force protection and national security. **US Army Chaplain Corps:** Founded in 1775, the US Army Chaplain Corps provides spiritual support, religious services, and moral guidance to soldiers and their families. Chaplains serve in all operational environments, offering counseling, conducting worship, and advising commanders on ethical and religious matters. The Corps has a long tradition of supporting soldier morale and spiritual resilience, adapting to the diverse faith needs of the Army throughout American history.
U.S. Army Veteran (2026 - 2026)
U.S. Army Veteran (2026 - 2026)
U.S. Army Other (2026 - 2026)
U.S. Army Spouse (2026 - Present)