During the American occupation, part of the barracks was razed, and a gymnasium was built on it. In early 1930s, one of first games of the NCAA was played in the 31st Infantry Quonset Gym. The buildings and the whole premises served as military headquarters for the 31st Infantry of the United States Army until 1941. During World War II, General Douglas McArthur held command post here, but the entire area was later destroyed by the ongoing military conflict.