 On December 8, 1899, Roosevelt was commissioned a second lieutenant in the United States Marine Corps and he rose to the rank of lieutenant colonel before retiring.During his career with the Marine Corps he was stationed in, among other places, Philadelphia, Panama, Cuba and Haiti.In 1920, he retired from the Marine Corps, and then served as the European manager for the Radio Corporation of America from 1923 to 1928, overseeing the building of large radio stations in Ankara, Turkey, and Warsaw, Poland.