US Army
1,360,374 members•89,925 units
Opening branch overview
Building the branch home surface
Loading branch highlights, featured unit context, and gallery moments.
Overview
Members
Units
Over 3,064,780 active members
1,360,374 members•89,925 units
Building the branch home surface
Loading branch highlights, featured unit context, and gallery moments.
Building the branch units surface
Loading unit filters, rankings, and the branch unit grid.
43rd ARTY
U.S. Army
The 43rd Artillery (43rd ARTY) was originally constituted in the Regular Army as the 43rd Coast Artillery in 1918 and has undergone several reorganizations and redesignations throughout its history. During World War II, the unit served in the Pacific Theater, providing critical anti-aircraft and coastal defense. After the war, the regiment was inactivated and reactivated multiple times, adapting to the evolving needs of the U.S. Army. In the Cold War era, the 43rd Artillery was re-designated as a field artillery unit, supporting both training and operational missions before its final inactivation.
43RD COMBAT ENGINEERS
U.S. Army
44TH SIGNAL
U.S. Army
452ND CSH
U.S. Army
461ST PSB
U.S. Army
46TH TRANS
U.S. Army
48TH AVIATION
U.S. Army
498TH MEDICAL COMPANY
U.S. Army
4th Engr Bn Fort Carson
U.S. Army
The 4th Engineer Battalion, stationed at Fort Carson, Colorado, boasts a distinguished history dating back to its activation in 1916. The unit has served in numerous conflicts, including World War I, World War II, the Korean War, and the Global War on Terrorism, providing vital combat engineering support. Throughout its service, the 4th Engineer Battalion has conducted a wide range of missions, from constructing bridges and clearing obstacles to route clearance and supporting infantry operations. Renowned for its versatility and dedication, the battalion continues to play a crucial role in both combat operations and humanitarian missions worldwide.
4TH PSYOPS
U.S. Army
4TH TRAINING BRIGADE
U.S. Army
5:1 CAV
U.S. Army
The 5th Squadron, 1st Cavalry Regiment (5/1 CAV) traces its lineage back to the formation of the 1st Cavalry Regiment in 1833, one of the oldest cavalry regiments in the United States Army. Over its long history, the unit has participated in numerous conflicts, including the Indian Wars, the Philippine-American War, World War II, and the Vietnam War, adapting from horse-mounted operations to modern armored and reconnaissance roles. In recent decades, 5/1 CAV has served as a reconnaissance and security element, most notably as part of the U.S. Army’s Stryker Brigade Combat Teams, deploying in support of operations in Iraq and Afghanistan. The unit is renowned for its adaptability, esprit de corps, and dedication to mission success, exemplifying the cavalry’s enduring motto: “Courage and Fidelity.”
5:3 ADA
U.S. Army
The 5th Battalion, 3rd Air Defense Artillery Regiment (5-3 ADA) traces its lineage back to the early 19th century, with origins in the 3rd Regiment of Artillery, constituted in 1821. Over its distinguished history, the unit has participated in numerous conflicts, including the War of 1812, World War II, and Operations Desert Shield and Desert Storm, evolving from traditional field artillery to modern air defense roles. Reactivated in various forms throughout the 20th and 21st centuries, 5-3 ADA is now equipped with cutting-edge air defense systems such as the Patriot missile system. Today, the battalion plays a vital role in protecting U.S. and allied forces from aerial and missile threats, continuing its legacy of service and adaptation on the modern battlefield.
501st MI
U.S. Army
502ND ASA GROUP
U.S. Army
502ND MI
U.S. Army
502ND PSB
U.S. Army
503RD FINANCE
U.S. Army
503rd mp
U.S. Army
503RD MP COMPANY
U.S. Army
504 MP
U.S. Army
509th RRGP 146th Aviation Company
U.S. Army
The **509th Radio Research Group (RRGP) – 146th Aviation Company** was a specialized U.S. Army unit active during the Vietnam War. Tasked with aerial signals intelligence (SIGINT) operations, the 146th Aviation Company operated aircraft such as the RU-6A and RU-8D to intercept enemy communications. As part of the 509th RRGP, their missions provided critical real-time intelligence to ground forces, supporting both tactical operations and strategic planning. The unit’s skilled aircrews and analysts played a vital role in counterinsurgency efforts throughout Southeast Asia until the drawdown of U.S. forces in the early 1970s.
50TH ORD CO
U.S. Army
513TH TRANS
U.S. Army