I'm new to this forum but have already found it incredibly useful in decyphering my Grandfather's WW2 RAF service record. However I'm stuck on one of the trade descriptions assigned to him, in between working as a balloon fabric worker and a cook (not very glamorous but someone had to keep the heroes fed!). The mystery trade seems to read either "DC 14" (fourteen) or "DCI 4"(four). Does anyone have any idea what this might mean?
thanks in advance