Airborne forces
The Battle Dress design at the start of the war was the "(19)37 Pattern". In 1940 it was replaced with the simpler made "(19)40 Utility Pattern". This omitted finer details such as pleating on pockets. In both cases the blouse came in two forms, the ordinary ranks with closed neck and the officers open neck which exposed their shirt and tie. From 1942, the camouflaged Denison smock, originally issued to the Airborne forces to be worn over the BD, was issued more widely.