100th Infantry Regiment
Modern Era, United States, Infantry
The 100th Infantry Regiment stands apart from most other regiments in this number range because of its famous connection to Japanese American service in World War II. The 100th Infantry Battalion from Hawaii became one of the most decorated units of its size and length of service in American military history.
That battalion fought in Italy and later became closely linked with the 442nd Regimental Combat Team, creating one of the most celebrated lineages in the entire Army. The 100th name is therefore associated not simply with a numbered regiment, but with a powerful story of loyalty, sacrifice, and combat distinction under difficult political conditions at home.
In the modern U.S. Army, the 100th remains one of the most meaningful symbols of Nisei military service and of the Army's broader story of inclusion through wartime sacrifice.
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 100th Infantry Regiment Battalions page.