The United States Army established the now historical Camp Las Casas, in the area of "Las Casas" in 1904. The camp was the main training base of the "Porto Rico Regiment of Infantry" (on January 15, 1899, the military government changed the name of Puerto Rico to Porto Rico and on May 17, 1932, U.S. Congress changed the name back to "Puerto Rico") The Porto Rico Regiment of Infantry was a segregated U.S. Army Regiment which was later renamed the "65th Infantry Regiment". Correction on the previous statement : The 65th Infantry Regiment was not segregated. It was a Regular Army Regiment that accepted personnel of every race but blacks, there was a black Regiment in the Island for that purpose, the 375th Regiment. The base continued in operation until 1946, when it was finally closed and the Residencial Las Casas now stands.