In the Army if a deployed logistics base is being set up the RLC will send out fuels specialists, supply controllers, supply specialists, plant ops and many others whereas in the RAF many of those RLC tasks can be carried out by one Supplier, so thats all we send. As a Supplier I can work in many of the 'parts' that the RLC has but an equivalent RLC storeman can only do part of my trade.
Helpfull Stacker, quite right, however the point being made is that they also do guard duties and all sorts of niff naff and triv. I see TSW guys on a daily basis and know how hard they work.