The XVIII Airborne Corps is a corps of the United States Army that has been in existence since 1942 and saw extensive service during World War II. The corps is designed for rapid deployment anywhere in the world and is referred to as "America's Contingency Corps". Its headquarters are at Fort Bragg, North Carolina.
The 9th Infantry Division is an inactive infantry division of the United States Army. It was created as the 9th Division during World War I, but never deployed overseas. In later years, it would become an important unit of the U.S. Army during World War II and the Vietnam War. It was also activated as a peacetime readiness unit from 1947 to 1962 at Fort Dix, New Jersey, and Fort Carson, Colorado, and from 1972 to 1991 as an active-duty infantry division at Fort Lewis, Washington. Nicknamed the "Old Reliables", the division was eventually deactivated in December 1991.
The 519th Military Intelligence Battalion is a unit of the United States Army.
The Combat Aviation Brigade, 1st Infantry Division is the Army Aviation formation of the United States Army's 1st Infantry Division. The current commander of this brigade is Colonel Bryan Chivers.
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 3d 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 158th Aviation Regiment is an aviation regiment of the United States Army.
The 3rd Infantry Brigade Combat Team was an infantry brigade based at Fort Knox, Kentucky. The brigade was a subordinate unit of 1st Infantry Division.
The 229th Aviation Regiment is an aviation unit of the United States Army.
The U.S. 41st Infantry Regiment is a regiment of the United States Army. Its 1st Battalion is currently assigned to the 2nd Infantry Brigade Combat Team, 4th Infantry Division. Its 3rd Battalion was assigned to the 1st Stryker Brigade Combat Team, 1st Armored Division, which was replaced in 2018 by 4th Battalion, 70th Armor Regiment, 1st Brigade Combat Team, 1st Armored Division.
The 1st Brigade, 24th Infantry Division was an infantry brigade of the United States Army. Before its most recent deactivation in 2006, it was based at Fort Stewart, Georgia. It was a divisional brigade of the 24th Infantry Division.
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 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 63rd Armor Regiment is an armored regiment of the United States Army formed in 1942.
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 9th Field Artillery Regiment is a field artillery regiment of the United States Army first formed in 1916. The regiment served in Hawaii during World War I, 3rd, 4th, 7th, and 9th Divisions between the world wars, and with 3rd Infantry Division during World War II and Korea. Since 1957, 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, 4th, 10th, 25th, 79th, 83rd, and 96th Infantry Divisions and various field artillery brigades and groups. The regiment's single active component, the 1st Battalion, 9th Field Artillery Regiment, is assigned to the 2nd Brigade Combat Team, 3rd Infantry Division and stationed at Fort Stewart, Georgia.
The 51st Infantry Regiment is a regiment of the United States Army first established in 1917.
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 109th Military Intelligence Battalion is a multidiscipline Military Intelligence battalion of the United States Army headquartered at Joint Base Lewis-McChord, Washington. A Regular Army Military Intelligence Battalion, it is one of the subordinate battalions of the 201st Expeditionary Military Intelligence Brigade, which is part of the US Army's I Corps..
The 525th Expeditionary Military Intelligence Brigade (Expeditionary) is a unit of the United States Army specializing in the acquisition and analysis of information with potential military value. On 28 October 2014, the unit was reflagged from the "525th Battlefield Surveillance Brigade" to an expeditionary military intelligence brigade, the first of its kind.
The 1st Infantry Division Artillery (DIVARTY) is the divisional artillery command and force fires headquarters for the 1st Infantry Division at Fort Riley, Kansas. The DIVARTY has served with the division from 1917 to 1939, 1940–1995, 1996–2005, and reactivated in October 2015. The unit has been stationed at Fort Riley, Kansas, and in Germany, and has seen combat in World War I, World War II, the Vietnam War, Operation Desert Storm, and Operation Iraqi Freedom. The DIVARTY provides a single proponent with the division for standardized fires certification and leader development while exemplifying effective mission command, and supporting the seamless cross-attachment of units with common procedures and a shared understanding of the fires warfighting capabilities.
United States 
