The 39th Infantry Regiment is a parent regiment in the United States Army. Originally organized for service in World War I, the 39th fought in most of the conflicts involving the United States during the 20th century, and since 1990 the 2nd Battalion has served as a training unit stationed at Fort Jackson, South Carolina. The 3rd Battalion was started on 21 October 2015 and a 4th Battalion was added in July 2017.
The 26th Infantry Regiment is an infantry regiment of the United States Army. Its nickname is "Blue Spaders", taken from German soldiers in World War I who saw the spade-like device on the regiment's distinctive unit insignia and called the soldiers “Blauerspadern”. The 26th Infantry Regiment is part of the U.S. Army Regimental System; currently only the 1st Battalion is active and assigned to the 2nd Brigade Combat Team, 101st Airborne Division.
The 14th Infantry Regiment is a United States Army light infantry regiment. It has served in the American Civil War, Boxer Rebellion, World War II, Korean War, Vietnam War, Operation Restore Hope, Operation Uphold Democracy, Operation Joint Guard, Operation Desert Storm, Operation Enduring Freedom, Operation Gothic Serpent, Operation New Dawn, Operation Resolute Support,Operation Iraqi Freedom, and Operation Inherent Resolve. The 14th Infantry Regiment did not take part in combat during World War I. It has also conducted peacekeeping and humanitarian missions in the Sinai Peninsula, Guantánamo Bay in Cuba, Bosnia, and Kosovo.
The 87th Infantry Regiment is an infantry regiment in the United States Army. The regiment's 1st and 2nd Battalions are light infantry units assigned to the 1st and 2nd Brigade Combat Teams respectively of the 10th Mountain Division located at Fort Drum, New York. The 3rd Battalion was active in the U.S. Army Reserve in Colorado. The 4th Battalion was a Regular Army unit assigned to the 3rd Brigade Combat Team of the 25th Infantry Division (Light) at Schofield Barracks, Hawaii.
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 2nd Infantry Regiment is an infantry regiment in the United States Army that has served for more than two hundred years. It was constituted on 12 April 1808 as the 6th Infantry and consolidated with 4 other regiments in 1815 to form the present unit.
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 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 2nd Field Artillery Regiment is a field artillery regiment in the United States Army. Currently a parent regiment under the U.S. Army Regimental System, the regiment has a single active battalion, the 2nd Battalion, 2nd Field Artillery, assigned to the 428th Field Artillery Brigade at the U.S. Army Field Artillery, Fort Sill, OK. Their long history is currently represented by the 2nd Field Artillery Mascots
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 8th Field Artillery Regiment is a field artillery regiment of the United States Army first formed in 1916. The regiment served in World War I, World War II, and Korea, and regimental units have served in Vietnam, Honduras, Panama, Operation Desert Storm, Operation Enduring Freedom and Operation Iraqi Freedom. Currently organized as a parent regiment under the U.S. Army Regimental System, the regiment's only active component is the 2nd Battalion, 8th Field Artillery Regiment, currently assigned to the 1st Infantry Brigade Combat Team, 11th Airborne Division and stationed at Fort Wainwright, Alaska.
The 15th Field Artillery Regiment (FAR) is a field artillery regiment of the United States Army first formed in 1916. A parent regiment under the U.S. Army Regimental System, the 15th FAR currently has two active battalions: the 1st Battalion, 15th Field Artillery Regiment, is assigned to the 1st Brigade Combat Team, 2nd Infantry Division, while the 2nd Battalion, 15th Field Artillery Regiment, is assigned to the 2nd Brigade Combat Team, 10th Mountain Division.
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 25th Field Artillery Regiment is a field artillery regiment of the United States Army, first constituted 5 July 1918 in the National Army (USA). Although the regiment did not see action during World War I, elements participated in World War II, Vietnam, Panama, the Gulf War, and the Global War on Terrorism. Currently the regiment one active battalion, a towed light artillery units equipped with the M119A3 105mm Howitzer and the M777A2 155mm Howitzer. The 5th Battalion is assigned to the 3rd Brigade Combat Team, 10th Mountain Division at Fort Johnson, Louisiana. The 4th Battalion was inactivated on 14 August 2014.
The 26th Field Artillery Regiment is a field artillery regiment of the United States Army first constituted 5 July 1918 in the National Army (USA).
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 44th Air Defense Artillery Regiment is an Air Defense Artillery regiment of the United States Army, first constituted in 1918 in the Regular Army during World War I. During World War II the unit served as the 54th Coast Artillery Regiment
The 58th Infantry Regiment is a regiment of the United States Army first established in 1917.
The 102nd Cavalry Regiment is a regiment of the United States Army first established in 1913 and which saw service in World War II.
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United States Army 
