| United States. Army. Infantry Regiment, 25th. Matches 1 item |
| United States. Army. Infantry Regiment, 26th (1901-1957) Matches 1 item |
| United States. Army. Infantry Regiment, 28th (1901-1957) Matches 1 item |
| United States. Army. Infantry Regiment, 28th. Battalion, 2nd. Charlie Company. Matches 1 item |
| United States. Army. Infantry Regiment, 369th -- Juvenile literature. Matches 2 items |
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United States. Army. Infantry Regiment 51st Pioneer Regt. SEE: United States. Army. Infantry 51st Pioneer Regt Matches 1 item
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| United States. Army. Intelligence Support Activity. Matches 1 item |
| United States. Army. Iowa Cavalry Regiment, 5th (1861-1865) Matches 1 item |
| United States. Army. Iowa Infantry Regiment, 15th (1861-1865) Matches 2 items |
| United States. Army Iowa Infantry Regiment, 20th (1861-1865) Matches 1 item |