Modern Era, United States, Infantry
The 56th Infantry Regiment was one of the numbered infantry lineages maintained within the Army's expanding twentieth-century force. Unlike the oldest regular regiments, it is associated less with the frontier and more with the service's modern wartime structure.
Its lineage survives as part of the Army's habit of preserving organizational identity through redesignation and selective activation. That process allowed the Army to keep a deeper bench of unit history than the active field force alone would suggest.
The 56th Infantry is therefore part of the institutional history that underpinned the Army's larger mobilization and modernization efforts.
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 56th Infantry Regiment Battalions page.