66th Infantry Regiment
Modern Era, United States, Infantry
The 66th Infantry Regiment belongs to the Army's modern lineage pool and reflects the twentieth-century tendency to preserve unit identity through redesignation even as tactical organization changed. It sits within the broader group of numbered regiments kept for expansion, mechanization, or later institutional use.
Its historical profile is therefore more institutional than narrative, but it still contributes to the Army's long organizational memory and to the preserved lineage structure behind later battalion and brigade formations.
The 66th Infantry remains part of the historical record of how the Army modernized and retained continuity at the same time.
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 66th Infantry Regiment Battalions page.