The 1943 N-1 Deck Jacket was issued to all U.S. Navy Personnel during WW2. It saw action from the beaches of Normandy to the Pacific Islands and became one of the most used and most favoured jackets of the U.S. Armed Forces in the 1940s.
The general construction of the jacket combines a thick outer layer of "Jungle Cloth" with a wool lining. So the wearer stays warm and comfortable even under harshest weather conditions.