The 508th Infantry Regiment is an airborne infantry regiment of the United States Army, first formed in October 1942 during World War II. The 508th is a parent regiment under the U.S. Army Regimental System, and two battalions from the regiment are currently active: the 1st Battalion, 508th Parachute Infantry Regiment is assigned to the 3rd Brigade Combat Team, 82nd Airborne Division, and the 2nd Battalion, 508th Parachute Infantry Regiment is assigned to the 2nd Brigade Combat Team, 82nd Airborne Division. The regiment served in combat during World War II, and regimental elements have served in combat in the Dominican Republic, Vietnam, Grenada, Panama, Iraq and Afghanistan.
The 1st Armored Brigade Combat Team, 1st Cavalry Division is a cavalry unit of the United States Army based in Fort Cavazos, Texas.
The 3rd Brigade Combat Team, 1st Cavalry Division is a combined arms armored brigade of the 1st Cavalry Division based in Fort Cavazos, TX. Major equipment includes the M1A2SEP Tanks, M2A3 & M3A3 Bradley infantry fighting vehicles, M109A7 Paladin howitzers, and M1114 up-armored Humvees.
The 77th Armor is an armored (tank) regiment of the United States Army. The 77th Armor Regiment is part of the U.S. Army Regimental System with only a single battalion, the 1st Battalion, 77th Armor Regiment, and is therefore classified as both a single battalion and the remainder of the Regiment itself. 1–77 AR is currently stationed at Fort Bliss, Texas as part of the 3rd Brigade "Bulldogs", 1st Armored Division and has transformed from a tank pure battalion into a combined arms battalion (CAB).
The 20th Infantry Regiment is a United States Army infantry regiment. Currently only the 5th Battalion of the 20th Infantry still exists. Stationed at Joint Base Lewis-McChord and part of the 1st Stryker Brigade Combat Team, 2nd Infantry Division, 5-20 Infantry was one of the original battalions selected to take part in the testing and fielding of the U.S. Army's then-new Stryker vehicle. During the Vietnam War, elements of the regiment carried out the My Lai massacre.
The 2nd Battalion, 503rd Infantry Regiment is an active duty airborne infantry battalion in the United States Army, assigned to the 173rd Airborne Brigade Combat Team and stationed at Caserma Del Din, Vicenza, Italy. The battalion has served with the 2nd Infantry Division, the 11th Airborne Division, the 24th Infantry Division, The 25th Infantry Division, the 82nd Airborne Division, the 101st Airborne Division, and the 173rd Airborne Brigade; has been stationed in Korea, Germany, Italy and the United States; and earned campaign credits in World War II, the Vietnam War, Operation Enduring Freedom—Afghanistan, and Operation Iraqi Freedom.
The 33rd Armor Regiment was an armored regiment in the United States Army first formed in 1941. In 2005, the 33rd Armor was redesignated 33rd Cavalry Regiment. The 1st Squadron, 33rd Cavalry Regiment, a part of the 3rd Brigade Combat Team, 101st Airborne Division, carries on the lineage of 33rd Armor Regiment.
The 34th Armor Regiment is an armored regiment of the United States Army formed in 1941.
The 67th Armored Regiment is an armored regiment in the United States Army. The regiment was first formed in 1929 in the Regular Army as the 2nd Tank Regiment (Heavy) and redesignated as the 67th Infantry Regiment (Medium Tanks) in 1932. It first became the 67th Armor in 1940. The regiment participated in World War I, World War II, Desert Storm/Desert Shield, Operation Iraqi Freedom, Operation Enduring Freedom, Operation Spartan Shield, Operation Inherent Resolve, Operation Resolute Support, and Operation Freedom's Sentinel.
The 163rd Infantry Regiment is a regiment of the Montana National Guard. It went overseas with the 41st Infantry Division in World War II.
The 14th Brigade Engineer Battalion is a Combat Engineer Battalion of the United States Army based at Joint Base Lewis-McChord, Washington. The battalion is a subordinate unit of the 2nd Stryker Brigade, 2nd Infantry Division, and I Corps. The battalion's official motto is "Gong Mu Ro" and battle cry "Rugged!".
The 6th Field Artillery Regiment is a Field Artillery Branch regiment of the United States Army first activated in 1907 from numbered companies of artillery. It was first organized with two battalions.
The 16th Field Artillery Regiment is a field artillery regiment of the United States Army. The regiment served with the 4th Division in World War II and with the 4th and 8th Divisions between the World Wars. As the 16th Armored Field Artillery Battalion, it served with the 9th Armored Division during World War II, and with the 2nd Armored Division after the war. Designated a parent regiment under the Combat Arms Regimental system, and later the U.S. Army Regimental System, since 1957, regimental elements have served with the 1st, 2nd and 4th Armored Divisions; the 4th, 8th, and 81st Infantry Divisions; and the 1st Cavalry Division. Regimental elements have participated in combat in Vietnam, and in Operation Iraqi Freedom. The regiment currently has a single active battalion, the 3rd Battalion, 16th Field Artillery, assigned to the 2nd Brigade Combat Team, 1st Cavalry Division and stationed at Fort Cavazos, Texas.
The 1st Battalion, 107th Cavalry Regiment was a unit of the Ohio Army National Guard, with troops in multiple locations throughout northeastern Ohio and has served in the United States of America's major wars and conflicts since 1898 until its inactivation on 31 August 2007.
The 300th Field Artillery Regiment is a Field Artillery regiment of the United States Army.
The 377th Field Artillery Regiment is a field artillery regiment of the United States Army. A parent regiment under the U.S. Army Regimental System, the regiment's 2nd Battalion, 377th Field Artillery Regiment is assigned to the 2nd Infantry Brigade Combat Team (Airborne), 11th Airborne Division. Elements of the regiment have also served with the 101st Airborne Division and 82nd Airborne Division, and have seen service in World War II, Vietnam, and in both Iraq and Afghanistan during the Global War on Terror. The 1st and 3rd Battalions as well as Batteries D and E are Inactive.
The 102nd Cavalry Regiment is a cavalry regiment of the United States Army first established in 1921. It has seen service in the Second World War, including in Normandy and at the Battle of the Bulge, in Iraq 2008-2009, in Jordan and Somalia in 2019, plus many exercises and Hurricane Sandy and Hurricane Maria relief. Its tradition of service is carried on today by the 1st Squadron 102nd Cavalry Regiment.
The 105th Cavalry Regiment is a regiment in the United States Army National Guard.
The 1st Battalion, 279th Infantry Regiment is headquartered in Sand Springs, Oklahoma. It is a part of the 45th Infantry Brigade Combat Team, Oklahoma Army National Guard.
The 1st Battalion, 503rd Infantry Regiment is an active duty airborne infantry battalion in the United States Army, assigned to the 173rd Airborne Brigade Combat Team and stationed in Vicenza, Italy. The battalion has served with the 2nd Infantry Division, the 11th Airborne Division, the 24th Infantry Division, the 82nd Airborne Division, and the 173rd Airborne Brigade; has been stationed in Korea, Italy and the United States; and earned campaign credits in World War II, the Vietnam War, Operation Enduring Freedom-Afghanistan, and Operation Iraqi Freedom.
United States 
