45th Infantry Regiment
Modern Era, United States, Infantry
The 45th Infantry Regiment was another of the Philippine Scout regiments, created to serve in the American colonial military establishment in the islands. Like the 43rd Infantry, it reflected the distinctive structure of the U.S. Army's presence in the Philippines before World War II.
Its defining historical moment came in the defense of the Philippines against Japan. The service of the Philippine Scout regiments in 1941-42, including the 45th Infantry, remains one of the most consequential and often underappreciated chapters of U.S. Army history in the Pacific.
The 45th Infantry no longer exists as an active regiment, but its history remains central to understanding the Philippine Scouts and the multinational character of American military service in the islands.
Battalion Page
A dedicated battalion subpage now collects the regiment's known battalion icons and short sketches for the 1st, 2d, and 3d Battalions. Open the 45th Infantry Regiment Battalions page.