90th Infantry Regiment
Modern Era, United States, Infantry
The 90th Infantry Regiment was part of the Army's modern-era pool of numbered infantry lineages, maintained to support mobilization and later institutional continuity. It reflects the service's broader administrative depth in the twentieth century.
As with many lineages in this range, its identity endured through official lineage and honors rather than through a continuously active independent regimental field life. That was a common outcome as the Army reorganized around battalions, brigades, and combined-arms formations.
The 90th Infantry remains part of the Army's preserved historical structure and of the record of its modern expansion base.
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 90th Infantry Regiment Battalions page.