Crowder served in the Marine Corps from 1921 to 1925. After leaving the Marines he joined the Dallas Police Department as a motorcycle officer in 1925. In 1930 he transferred to the Texas Highway Department and in 1937 received his Ranger commission and served in Company B. Crowder became captain of Company C in Lubbock in 1948 but transferred back to Company B in 1951 to live in Dallas. In 1956, he was made Acting Chief of the Texas Rangers. In 1960 he took a cut in pay to return to his favorite post as Captain of Company B from which he retired in 1969.