Conversation so far:
How long was Bill Edwards with the Detroit Lions?
Bill Edwards was with the Lions for 2 years from 1941-1942.
Did Bill Edwards win much with the Detroit Lions?
Edwards was unsuccessful. He guided the team to a 4–6–1 record in 1941, and was fired after three straight losses to begin the 1942 season
What year did he start with them?
Bill Edwards started with the Lions from 1941.
Did Bill Edwards go right from the Lions to the Browns?
Edwards enlisted in the U.S. Navy in 1942 as America's involvement in the war intensified, was discharged 1946, and spent a year in sporting goods before joining the Cleveland Browns.
How long was Bill Edwards with the browns?
Bill Edwards was with the Cleveland Browns for two years from 1947-1948.
What about American football coach Bill Edwards' military service was he in a war?
While the US was involved in WWII, Bill Edwards served at St. Mary's Pre-Flight, and coached the Air Devils football team there. He also served at a base in Florida.

Question: How long was he in the military?
Self-contained rewrite: How long was American football coach Bill Edwards in the military?