Can someone confirm what badge would have been worn on my grandads R A F uniform. On his ORBs it shows him as Sergeant ............WOP. yet on his 543 form it says during the period he served with 102 squadron his trade/title was WOP/AG , this is detailed under the section headed."Mustering ". Would be grateful for any help with this as don't have any photos, and this is going on a tattoo to honour him ....regards, Mark.