 During World War I, Spiewak produced wool coats and breeches for the US Army and Navy, including pea coats, which are still made by the company today.During World War II, jackets and flight coats were produced for the US Military including styles such as B-9/B-11 parkas, A-1/A-2, B-10/B-15 flight jackets, B-3/D-1/D-3 flight suits, M-41/M-43 field jackets/N-1 deck jackets, N-2/N-3 snorkel parkas, and T-1 tanker jackets.During the Korean War, Spiewak continued to make WWII styles for the military, and added G-8WEP flight jackets and M-52 field jackets.