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398 CSSB
U.S. Army
The 398th Combat Sustainment Support Battalion (398th CSSB) is a unit within the United States Army Reserve specializing in logistics and sustainment operations. Activated in 2006, the battalion provides supply, transportation, and maintenance support to ensure operational readiness for supported units. The 398th CSSB has participated in various training exercises and mobilizations, including deployments in support of overseas contingency operations. Its headquarters is located in Rockville, Maryland, and it falls under the 310th Sustainment Command (Expeditionary).
398th Trans Det, 11th ACR
U.S. Army
The 398th Transportation Detachment (398th Trans Det) was a logistical support unit assigned to the 11th Armored Cavalry Regiment (11th ACR), famously known as the "Blackhorse Regiment." Activated during the Vietnam War era, the 398th Trans Det played a crucial role in maintaining the operational mobility of the regiment by providing vehicle maintenance, recovery, and transportation services. Stationed primarily in South Vietnam, the detachment supported armored and cavalry operations by ensuring the timely delivery and repair of essential equipment and supplies. Their efforts contributed to the 11th ACR's ability to conduct rapid armored maneuvers and sustain prolonged combat operations in challenging terrain.
3d Infantry Division Military Police
U.S. Army
The 3d Infantry Division Military Police (MP) have served as a vital component of the 3d Infantry Division, providing law enforcement, force protection, and battlefield circulation control since their inception. Throughout World War II, elements of the division’s MPs participated in major campaigns across North Africa, Sicily, Italy, and France, ensuring security and discipline within the ranks and managing prisoners of war. In more recent history, the 3d Infantry Division MPs deployed in support of Operations Desert Storm, Iraqi Freedom, and Enduring Freedom, where they conducted route security, convoy escort, and detainee operations. Their legacy is marked by adaptability and dedication to safeguarding their fellow soldiers and maintaining order in both combat and garrison environments.
3MISSLE BATALION 21 ARTILLARY
U.S. Army
The 3rd Missile Battalion, 21st Artillery (3-21 ADA), was an integral part of the United States Army Air Defense Artillery branch during the Cold War era. Originally constituted in the mid-20th century, the battalion was equipped with surface-to-air missile systems such as the Nike Hercules to protect critical areas from potential aerial threats. Stationed at various locations in the United States and abroad, 3-21 ADA played a vital role in strengthening NATO’s defensive posture in Europe. The unit’s mission focused on airspace defense until advancements in missile technology and changing strategic needs eventually led to its inactivation.
3rd Battalion 21st Artillery
U.S. Army
The 3rd Battalion, 21st Artillery was originally constituted in the Regular Army as part of the 21st Field Artillery Regiment in 1916. During World War II, its parent regiment served in the European Theater, participating in key campaigns. Reactivated and reorganized during the Vietnam War, the 3rd Battalion, 21st Artillery provided direct fire support for infantry operations, notably supporting the Americal Division in Quang Ngai and Quang Tin provinces. The battalion earned multiple campaign streamers and unit commendations before being inactivated after the war.
3rd Battalion 41st FA 24th ID
U.S. Army
The 3rd Battalion, 41st Field Artillery (3-41 FA), served as a key artillery unit within the 24th Infantry Division (Mechanized) of the United States Army. Originally constituted in the early 20th century, the 41st Field Artillery Regiment provided vital fire support in several major conflicts, including World War II, where it supported infantry operations across the European Theater. During the Gulf War in 1990-1991, 3-41 FA played a crucial role in Operation Desert Storm, delivering precise artillery fire in support of the division’s rapid advance into Iraq and Kuwait. Following the Cold War, the battalion continued to serve with the 24th ID until the division’s inactivation in the mid-1990s, leaving a legacy of professionalism and combat effectiveness.
3rd Battalion, 109th Infantry. Headquarters Company
U.S. Army
The 3rd Battalion, 109th Infantry, Headquarters Company, traces its lineage to the storied 109th Infantry Regiment of the Pennsylvania Army National Guard, with roots extending back to the Civil War era. Throughout its history, the battalion saw distinguished service in major conflicts, including World War I with the 28th Infantry Division in France, and World War II, participating in campaigns across Europe. During the Cold War and into the modern era, the battalion continued to serve as a vital component of the National Guard, providing trained soldiers for both federal and state missions. Headquarters Company has served as the command and control hub, ensuring operational readiness and effective leadership for the battalion’s missions at home and abroad.
3rd BCT Brigade, 5th Army
U.S. Army
The 3rd Brigade Combat Team (BCT), part of the 5th Army, has served as a key maneuver element within the U.S. Army’s organizational structure. Activated during World War II, the brigade participated in major campaigns in the European Theater, providing infantry and armored support in pivotal battles. Throughout the Cold War and into the 21st century, the 3rd BCT adapted to changing doctrines, deploying in various contingency operations and training exercises worldwide. Today, the brigade continues its legacy of readiness and operational excellence as part of the Army’s rapid deployment force.
3rd MASH
U.S. Army
The 3rd Mobile Army Surgical Hospital (3rd MASH) was a vital U.S. Army medical unit, first activated during World War II to provide rapid, frontline surgical care for wounded soldiers. Reactivated for the Korean War, the 3rd MASH operated close to the front lines, saving countless lives through advanced trauma surgery techniques in harsh field conditions. The unit was renowned for its mobility and adaptability, frequently relocating in response to shifting battle lines. After its distinguished service, the 3rd MASH was eventually inactivated, its legacy continuing in modern military medical units such as Combat Support Hospitals (CSHs).
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