The 8th Infantry Regiment of the United States, also known as the "Fighting Eagles," is an infantry regiment in the United States Army. The 8th Infantry participated in the Mexican War, American Civil War, Philippine Insurrection, Moro Rebellion, World War I, World War II, Vietnam War, and Iraq Campaign.
The 199th Infantry Brigade (Light) is a unit of the United States Army which served in the Army Reserve from 1921 to 1940, in the active army from 1966 to 1970 (serving in the Vietnam War), briefly in 1991–1992 at Fort Lewis, and from 2007 as an active army training formation at Fort Moore.
The 66th Armor Regiment is the oldest armored unit in the United States Army, tracing its lineage to the 301st Tank Battalion which served with distinction soon after it was formed in the First World War; the 301st trained at Camp Meade, Maryland, where then-Cpt. Dwight D. Eisenhower was an instructor. It has often been rumored that the 301st, the parent unit of the 66th, was first commanded by Col. George S. Patton, but this appears not to have been the case; while Patton was the first officer assigned to the Tank Corps, and while the 301st Tank Battalion was the first unit formed, Patton went nearly immediately to France to train Americans attached to Allied commands. The 301st was the only American heavy tank battalion to have seen action in the war. After the war, the 301st transitioned in the Regular Army to become the 66th Infantry Regiment by way of the 16th Tank Battalion.
The 194th Armored Brigade is a separate brigade of the US Army. All armor, cavalry, and armor and cavalry mechanic soldiers, and Marines in equivalent specialties, are trained by the 194th under the armor component of the Maneuver Center of Excellence at Fort Moore, Georgia, where the 194th has been garrisoned since 2012.
The 73rd Cavalry Regiment is a Cavalry Regiment in the United States Army, first formed in 1941. The three squadrons of the 73rd Cavalry Regiment provide reconnaissance, surveillance, and target acquisition (RSTA) to the Brigade Combat Teams of the 82nd Airborne Division. 3rd Squadron is assigned to 1st Brigade, 1st Squadron is assigned to 2nd Brigade, and 5th Squadron is assigned to 3rd Brigade.
The 68th Armor Regiment is an armored regiment of the United States Army. It was first activated in 1933 in the Regular Army as the 68th Infantry Regiment.
The 150th Cavalry Regiment is a regiment of the West Virginia Army National Guard, with troops in multiple locations throughout West Virginia and one troop in Sanford, North Carolina. It was originally formed as Greenbrier County militia, fighting for Virginia in the American Revolutionary War. During the American Civil War, companies of the regiment loyal to the recognized Union state government in Wheeling were later combined to form the Union Army's 5th and 9th West Virginia Infantry regiments, aiding in the defeat of Confederate troops in West Virginia, Ohio and Virginia.
The 18th Cavalry Regiment is a parent cavalry regiment of the United States Army.
The 5th Field Artillery Regiment was constituted as part of the Regular Army in January 1907. Individual battalions have lineages which date back further. Currently, it is a parent regiment under the U.S. Army Regimental System, with a single active battalion, the 1st Battalion, 5th Field Artillery, which is assigned to the 1st Brigade Combat Team, 1st Infantry Division at Fort Riley, Kansas.
The 48th Infantry Regiment is an infantry regiment in the United States Army first formed in 1917.
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 3rd Field Artillery Regiment is a field artillery regiment of the United States Army, first formed in 1812, although regimental units trace their lineages as far back as 1794. Based on the service of these antecedents, the regiment claims battle honors for the War of 1812, the Seminole campaign, the Mexican War, the Civil War, the Spanish–American War, and the Philippine Insurrection. The regiment served with the 6th Division during World War I, with the 5th Division, 6th Division and 2d Cavalry Division between the world wars, and with the 9th Armored Division during and after World War II. Since 1961, the regiment has been a parent regiment under the Combat Arms Regimental System and the U.S. Army Regimental System, with regimental elements serving with the 1st, 6th, and 8th Infantry Divisions; 2nd and 3rd Armored Divisions; 1st Cavalry Division; 194th Armored Brigade; and various field artillery brigades and groups. Two regimental battalions are currently active: the 2nd Battalion in the 1st Armored Division and the 5th Battalion in the 17th Field Artillery Brigade
The 76th Field Artillery Regiment is a field artillery regiment of the United States Army. First formed as a cavalry regiment in 1916, the regiment was converted to field artillery in 1917, and served in Europe during World War I with the 3rd Division and as a separate battalion during World War II, as well as in peacetime at Fort Knox, KY, and Fort Devens, MA. Since 1959, the regiment has been a parent regiment under the Combat Arms Regimental System and the U.S. Army Regimental System, with regimental elements serving with the 3rd Infantry Division in Germany and Operation Iraqi Freedom, with the 7th Infantry Division in Korea, and in the Army Reserve. No regimental elements are currently active.
The 77th Field Artillery Regiment is a field artillery regiment of the United States Army. First constituted 1916 in the Regular Army as a cavalry regiment. Reorganized in 1917 as field artillery and given its current designation.
The 79th Field Artillery Regiment is a field artillery regiment of the United States Army. First constituted 1916 in the Regular Army.
The 102nd Cavalry Regiment is a regiment of the United States Army first established in 1913 and which saw service in World War II.
The 3rd Aviation Regiment is a regiment of the United States Army Aviation Branch. It operates the Boeing AH-64 Apache attack helicopter, Sikorsky UH-60 Black Hawk helicopter, and Boeing CH-47 Chinook helicopter. It has been associated with the 3rd Infantry Division for some time.
The 40th Armor Regiment was an armored regiment of the United States Army until the inactivation of its last element, its 1st Battalion, in 1996. It was redesignated and reactivated in 2005 as the 40th Cavalry Regiment and assigned to the 4th Brigade (ABN) 25th infantry division and in 2022 to the 2nd Infantry Brigade Combat Team (Airborne), 11th Airborne Division.
United States 
