US WWII A4 Mechanics Wool knit beanie cap
US Army green mechanics wool hat, these are officially called "Cap, Mechanics, Winter, Type A-4".
The A-4 knitted hat was issued to the USAAF mechanics in WW2 and where often used by air crew and US Airborne soldiers like the 101st and 82nd Airborne instead of the Beanie (jeep cap).
Code: 56093