Camouflaged Rank Insignia
By August of 1942, the introduction of new types of camouflage clothing that did not display rank by means of shoulder straps or collar patches prompted the institution of specially designed camouflage rank badges. These badges were of lightweight material, and by regulation were to appear on the left arm of those garments that did not display rank in the usual manner; this list of uniforms included:
Animal skin uniforms
Denim overalls for AFV crews
The insignia was generally 10 cm wide, with NCO's and Officer's badges being in thin cotton, and General's badges usually embroided in wool.