 The military career of L. Ron Hubbard saw the future founder of Scientology serving in the United States Armed Forces as a member of the Marine Corps Reserve and , between 1941 – 50 , the Navy Reserve . He saw active service between 1941 – 45 , during World War II , as a naval Lieutenant , junior grade and later as a Lieutenant . After the war he was mustered out of active service and resigned his commission in 1950 . 
