Conversation so far:
What branch of military did the American football coach Bill Edwards serve in?
American football coach Bill Edwards enlisted in the U.S. Navy later in 1942 as America's involvement in the war intensified.
What is the Western Reserve in relation to American football coach Bill Edwards?
American football coach Bill Edwards left to coach the freshman football team at Western Reserve University in Cleveland, Ohio in 1933.
What year did American football coach Bill Edwards graduate?

Question: When did he begin coaching?
Self-contained rewrite: When did American football coach Bill Edwards begin coaching?