Rare WW2 Japanese Other Ranks Oil Cloth Combat Field Cap with Neck Protector, a very interesting and rare to find variation of Japanese field cap being the oil cloth example with laced up rear, fitted three part havelock neck flaps, chinstrap and embroidered felt Japanese infantry cap star. To the side of the cap is the rank insignia for a private 1st class. No markings or sweatband to the inside. Produced for wear with the steel combat helmet. This cap has been covered in an oil or other substance possibly to protect it from gas warfare at the time, which gives off a strong odour. A very interesting and scarce variant of Japanese headdress.