 His 17 victories in 1942 accounting for nearly a third of all of Philadelphia's season total of 55 wins; the A's finished eighth and last in the American League that season.He led the league in bases on balls and placed ninth in Most Valuable Player Award balloting in both 1942 and 1947.During World War II Marchildon served in the Royal Canadian Air Force as a tail gunner in a Halifax bomber and was later a prisoner of war at the infamous Stalag Luft III in Germany for the final nine months of the war.