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| 366th Infantry Regiment | |
|---|---|
| Unit name | 366th Infantry Regiment |
| Dates | 1917–present |
| Country | United States |
| Branch | United States Army |
| Type | Infantry |
| Size | Regiment |
| Nickname | "Black Panther" (historical) |
| Battles | World War I, World War II |
366th Infantry Regiment
The 366th Infantry Regiment is a United States Army infantry regiment with origins in the mobilization for World War I and a lineage extending through World War II, the Cold War, and later National Guard and Reserve configurations. The regiment served in expeditionary operations during the First World War, underwent interwar reorganizations tied to the National Guard (United States), participated in stateside and overseas assignments in World War II under various higher headquarters, and accrued honors and distinctive insignia during its long service. Its personnel and engagements intersect with major formations, campaigns, and figures of twentieth-century American military history.
The regiment traces its roots to the wartime expansion of the United States Army in 1917 and to federally recognized units of the National Guard (United States) and the United States Army Reserve. Throughout its history the unit has been subordinated to divisions and corps including the 92nd Division (United States), the 93rd Division (United States), and various corps during World War II, reflecting broader organizational shifts in the American Expeditionary Forces and later in the European Theater of Operations (United States Army). The regiment's administrative and operational records reflect interactions with the War Department (United States), the Adjutant General of the U.S. Army, and theater commands.
Constituted and organized amid the Selective Service mobilization of 1917–1918, the regiment was formed as part of the United States buildup for the First World War and assigned to an African American division structure that included the 92nd Division (United States). Deployed to the Western Front, soldiers of the regiment experienced trench warfare conditions and operated in sectors alongside French and British formations such as the French Army and the British Expeditionary Force. The regiment's wartime service occurred during major 1918 operations influenced by the German Spring Offensive (1918), the Hundred Days Offensive, and the Allied counteroffensives coordinated by General John J. Pershing. After the Armistice of 11 November 1918, the unit participated in demobilization at American camps, interacting with installations like Camp Grant (Illinois) and Camp Upton.
Following demobilization, the regiment was reorganized within the framework of the postwar National Guard (United States) realignments and federal recognition processes administered by the War Department (United States). During the 1920s and 1930s the unit experienced reconstitution, redesignation, and reassignment reflecting national defense policies such as the National Defense Act of 1920 and the budgetary constraints of the Great Depression. The regiment's peacetime activities included state service, training at federal encampments like Camp Shelby and summer maneuvers with formations such as the 46th Infantry Division (United States), and participation in civil support missions under gubernatorial authority.
With mobilization for the Second World War, the regiment was federalized and assigned to stateside and overseas duties, undergoing reorganization pursuant to theater requirements set by the War Department (United States), the Army Ground Forces, and theater commands such as European Theater of Operations (United States Army). Elements served in training, defense, and replacement roles supporting campaigns that involved formations like the First Army, the Third Army (United States), and the 87th Infantry Division (United States). The regiment's operations intersected with amphibious training doctrines influenced by the Amphibious Training Center (United States), logistical coordination with the Services of Supply (United States Army), and operational planning that referenced campaigns in Normandy, Northern France, and the later push into Germany, though some battalions remained assigned to continental U.S. defense and manpower replacement pools.
After 1945 the regiment underwent postwar inactivation, redesignation, and reallocation among components including the United States Army Reserve and various State National Guard organizations. During the Cold War its lineage was maintained through redesignations tied to the Combat Arms Regimental System and later the United States Army Regimental System, reflecting doctrinal changes from the Pentomic era to division-centric organizations. The regiment's personnel contributed to mobilizations and training programs during crises such as the Korean War, the Berlin Crisis of 1961, and contingency activations, working alongside formations like the XV Corps and commands such as the Continental Army Command.
The regiment's official lineage documents enumerate constitution, organization, federal service, demobilization, reconstitution, and redesignation actions recorded by the Adjutant General of the U.S. Army. Campaign streamers attributed to the regiment reference participation in World War I sectors and in World War II theaters where appropriate subordinate elements served. Unit decorations and awards have been authorized in accordance with criteria from the Department of the Army and include citations recorded on the unit rolls. The distinctive unit insignia and coat of arms, when authorized, followed heraldic guidance from the Institute of Heraldry (United States) and incorporated symbols representing service in specific campaigns and regional origins.
Soldiers and leaders associated with the regiment interacted with prominent commanders and contemporaneous units including officers who served in staffs of the 92nd Division (United States), liaison roles with the French Army, and attachments to corps commanded by generals of the American Expeditionary Forces. The regiment's engagements placed its soldiers in operational contexts overlapping with battles influenced by commanders such as John J. Pershing, John C. Pershing (note: same individual historically referenced as Pershing), and theater planners coordinating with Allied leaders like Ferdinand Foch and Douglas Haig. Across decades, veterans of the regiment served in veterans' organizations including the American Legion and the Veterans of Foreign Wars, preserving unit history through regimental associations and participation in memorials at sites such as the Meuse-Argonne American Cemetery and various state monuments.
Category:Infantry regiments of the United States Army