
Modern Era, United States, Infantry
The 78th Infantry Regiment was part of the Army's modern wartime and postwar structure rather than the old permanent regular establishment. Its place in history lies in that modern system of numbered lineages maintained for flexibility and continuity.
Over time the regiment's identity was carried through redesignation and selective activation, illustrating the Army's effort to preserve historical record while changing how it organized for combat.
The 78th Infantry remains one of the many lineages that show the institutional complexity of the twentieth-century Army.
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 78th Infantry Regiment Battalions page.