81st Infantry Regiment
Modern Era, United States, Infantry
The 81st Infantry Regiment belongs to the Army's higher-numbered modern lineages, shaped by wartime expansion and later by the preservation of unit identity through redesignation. It reflects the Army's move toward a larger and more administratively complex force in the twentieth century.
Its history survives primarily through the lineage and honors system rather than through one uninterrupted regimental combat narrative. That makes it representative of many regiments retained for continuity across changing force structures.
The 81st Infantry is therefore part of the Army's broader institutional history of mobilization and preserved identity.
Battalion Page
A dedicated battalion subpage now collects the regiment's known battalion icons and short battalion sketches for the 1st, 2d, and 3d Battalions. Open the 81st Infantry Regiment Battalions page.