Service during the World Wars

The 415th Regiment is a

regiment A regiment is a military unit. Its role and size varies markedly, depending on the country, service and/or a specialisation. In Medieval Europe, the term "regiment" denoted any large body of front-line soldiers, recruited or conscripted ...

of the

United States Army Reserve The United States Army Reserve (USAR) is a Military reserve force, reserve force of the United States Army. Together, the Army Reserve and the Army National Guard constitute the Army element of the reserve components of the United States Armed F ...

. Established 24 June 1921 as the 415th Infantry, part of the Organized Reserves, it was assigned to the 104th Infantry Division. The regiment was originally headquartered in

Casper, Wyoming Casper is a city in, and the county seat of, Natrona County, Wyoming, United States. Casper is the second-largest city in the state, with the population at 59,038 as of the 2020 census. Only Cheyenne, the state capital, is larger. Casper is nic ...

, with the 1st Battalion at

Gillette, Wyoming Gillette (, '' jih-LET'') is a city in and the county seat of Campbell County, Wyoming, United States. The town was founded in 1891 as a major railway town on the Chicago, Burlington and Quincy Railroad. The population was estimated at 32,030 a ...

, the 2nd Battalion at Casper, and the 3rd Battalion at

Laramie, Wyoming Laramie is a city in and the county seat of Albany County, Wyoming, United States. The population was estimated 32,711 in 2019, making it the third-largest city in Wyoming after Cheyenne and Casper. Located on the Laramie River in southeastern ...

. The primary

Reserve Officers Training Corps The Reserve Officers' Training Corps (ROTC ( or )) is a group of college- and university-based officer-training programs for training commissioned officers of the United States Armed Forces. Overview While ROTC graduate officers serve in all ...

feeder school was the

University of Wyoming The University of Wyoming (UW) is a public land-grant research university in Laramie, Wyoming. It was founded in March 1886, four years before the territory was admitted as the 44th state, and opened in September 1887. The University of Wyoming ...

. The regiment was inactivated by relief of personnel on 27 December 1940. It was ordered into active service on 15 September 1942, the regiment saw service during World War II with campaign participation credit in Northern France, Rhineland, and Central Europe.

Service after the World Wars

Inactivated during post-World War II demobilization, the regiment was reactivated 12 June 1947 as part of the Organized Reserves and headquartered in Tacoma, Washington under the 104th Division. The Battalions have been realigned under the 95th Training Division and provides trained personnel to support Initial Entry Training. Most recently, the regiment has served in support of the

Global War on Terror The war on terror, officially the Global War on Terrorism (GWOT), is an ongoing international counterterrorism military campaign initiated by the United States following the September 11 attacks. The main targets of the campaign are militant I ...

Lineage

* Constituted 24 June 1921 in the

Organized Reserves The United States Army Reserve (USAR) is a reserve force of the United States Army. Together, the Army Reserve and the Army National Guard constitute the Army element of the reserve components of the United States Armed Forces. Since July 202 ...

as the 415th Infantry and assigned to the 104th Division (later redesignated as the 104th Infantry Division) * Organized in January 1922 with headquarters at Casper, Wyoming * Ordered into active military service 15 September 1942 and reorganized at

Camp Adair Camp Adair was a United States Army division training facility established north of Corvallis, Oregon, operating from 1942 to 1946. During its peak period of use, the camp was home to approximately 40,000 persons — enough to have constituted t ...

, Oregon * Inactivated 17 December 1945 at

Camp San Luis Obispo Camp San Luis Obispo is the original home of the California Army National Guard. It served as an Infantry Division Camp and Cantonment Area for the United States Army during World War II. History Camp San Luis Obispo, formerly called Camp Merri ...

, California * Activated 12 June 1947 in the Organized Reserves with headquarters at Tacoma, Washington * Reorganized and redesignated 10 June 1959 as the 415th Regiment, an element of the 104th Division (Training), with headquarters at Seattle, Washington * Reorganized 10 January - 29 February 1968 to consist of the 1st and 2nd Battalions, elements of the 104th Division (Training) * Reorganized 1 April 1971 to consist of the 1st, 2nd, and 3rd Battalions, elements of the 104th Division (Training) * Reorganized 16 September 1993 to consist of the 1st, 2nd, 3rd, and 4th Battalions, elements of the 104th Division (Training) * Reorganized 16 April 1995 to consist of the 1st, 2nd, 3rd, and 4th Battalions, elements of the 104th Division (Institutional Training)

Campaign streamers

Decorations

References

{{reflist 415 Military units and formations established in 1921 Infantry regiments of the United States Army in World War II