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| 1st Battalion, 15th Infantry Regiment | |
|---|---|
| Unit name | 1st Battalion, 15th Infantry Regiment |
| Caption | Distinctive unit insignia |
| Dates | Constituted 1917–present |
| Country | United States |
| Allegiance | United States |
| Branch | United States Army |
| Type | Infantry |
| Role | Light infantry, mechanized operations |
| Size | Battalion |
| Command structure | 3rd Brigade Combat Team, 10th Mountain Division |
| Garrison | Fort Drum, New York |
| Nickname | “The Regulars” |
| Motto | “Can Do” |
| Colors | Blue |
| Mascot | None |
| Anniversaries | Regimental Day |
| Notable commanders | Col. John H. Parker, Lt. Col. Walter S. Hubbell |
| Identification symbol | thumb |
| Identification symbol label | Distinctive unit insignia |
1st Battalion, 15th Infantry Regiment 1st Battalion, 15th Infantry Regiment is an infantry battalion of the United States Army with a continuous lineage dating to World War I. The battalion has served in multiple conflicts including World War II, the Korean War, the Vietnam War, the Global War on Terror, and operations in the Arctic and Balkans, and is assigned to the 3rd Brigade Combat Team, 10th Mountain Division at Fort Drum. Its history ties to historic formations such as the 15th Infantry Regiment, 3rd Brigade Combat Team, 10th Mountain Division, and broader campaigns like the Allied invasion of Sicily.
The battalion traces antecedents to the 15th Infantry Regiment, originally constituted during the era of the World War I mobilization and later engaged in World War II campaigns in the Sicily Campaign, Italy Campaign, and the Southern France landings. Postwar reorganization placed the battalion into occupation duties connected with European theater of World War II stabilization. During the Korean War the unit was involved in combat operations linked to battles around the Pusan Perimeter and the Ch'ongch'on River engagements. In the Vietnam War era the battalion rotated to Southeast Asia, participating in counterinsurgency and conventional actions associated with operations near the A Shau Valley and Khe Sanh Combat Base. In the post-9/11 period the battalion deployed to Operation Enduring Freedom in Afghanistan, to Operation Iraqi Freedom in Iraq, and supported multinational efforts in the Bosnian War stabilization and NATO-related activities around Kosovo. Cold War and interwar assignments included training exchanges with units such as the Royal Canadian Regiment and participation in exercises with NATO partners.
The battalion’s lineage is maintained through the 15th Infantry Regiment heraldry originating from 19th- and 20th-century expansions tied to the United States Army regimental system, reflected in campaign streamers for World War II, Korea, Vietnam, Afghanistan, and Iraq. Decorations include awards such as the Presidential Unit Citation, Valorous Unit Award, and unit-level commendations tied to actions during the Allied invasion of Sicily, the Battle of Monte Cassino, and actions in Helmand Province. The battalion holds campaign credit for major Cold War, 20th-century, and 21st-century operations documented in Army lineage records aligned with the U.S. Army Center of Military History.
The battalion is organized under the brigade-battalion-company structure common to the United States Army infantry formations, typically comprising Headquarters and Headquarters Company (HHC), three rifle companies (A, B, C), a weapons company (D), and support elements including a forward support company aligned from a Brigade Support Battalion. Command relationships place the unit inside the 3rd Brigade Combat Team of the 10th Mountain Division, with attachments occasionally including elements from the 101st Airborne Division or task forces under United States Army Southern European Task Force during rotational deployments. The battalion’s staff integrates S1–S6 functions and liaises with higher echelons such as I Corps or US Army Northern Command depending on mission sets.
Operational deployments include major participation in World War II Mediterranean operations—Operation Husky, Naples–Foggia campaign—and later Operation Dragoon. In the Korean War the battalion was engaged in early defensive operations and the UN counteroffensives. Vietnam deployments encompassed operations like Operation Hastings and stability tasks in I Corps Tactical Zone near Da Nang. In the Global War on Terror the battalion conducted multiple rotations to Afghanistan provinces such as Kandahar Province and Helmand Province, and to Iraq provinces including Baghdad Governorate and Al Anbar Governorate for counterinsurgency, partnered training, and security operations. The unit has also participated in humanitarian assistance and partnership exercises tied to Operation Provide Comfort, Operation Provide Promise, and NATO training missions with partners like UK Armed Forces and Canadian Armed Forces.
Commanders and personnel associated with the battalion have included leaders who advanced to general officer ranks and those recognized for valor, such as commanders who later served with US Army Europe, United States Northern Command, and as instructors at the United States Military Academy at West Point. Individual personnel have received awards including the Silver Star, Bronze Star Medal, and Purple Heart for actions during named campaigns like the Battle of Monte Cassino and Fallujah. The battalion’s alumni network includes veterans who served in institutions such as the Pentagon, the Department of Defense, and veteran organizations such as the American Legion and Veterans of Foreign Wars.
Historically the battalion fielded equipment ranging from small arms like the M1 Garand and M14 rifle in early Cold War eras to modern systems such as the M4 carbine, M249 SAW, and anti-armor systems like the Javelin (missile). Mobility has included transport platforms from the M151 jeep and Humvee to current vehicles like the Stryker family when task-organized, and aviation support from UH-60 Black Hawk and CH-47 Chinook during air assault operations. Insignia includes the 15th Infantry Regiment distinctive unit insignia, regimental coat of arms, campaign streamers for World War II and later conflicts, and the shoulder sleeve insignia of the 10th Mountain Division.
Training programs follow doctrine from the United States Army Training and Doctrine Command and incorporate collective training at centers such as the Joint Readiness Training Center at Fort Polk and the National Training Center at Fort Irwin. The battalion conducts cold-weather training in coordination with the Northern Warfare Training Center and mountain operations tied to the 10th Mountain Division mission set, and engages in multinational exercises with partners from NATO, Canada, and United Kingdom under frameworks like the State Partnership Program. Doctrine references include adaptation of infantry tactics from publications of the United States Army Field Manual series and lessons integrated via professional institutions such as the Army War College.
Category:Infantry battalions of the United States Army Category:10th Mountain Division units