Hi Mary;
The Cap Badge is The Canadian Army - General Service Cap Badge - from the Second World War (39-45). An example of personnel who would have worn this cap badge are: personnel of General Employment Companies, Platoons, etc, who were employed on general duties within the Canadian Base areas in the UK during the war years, ie: at railheads - unloading/loading, supply depots etc - generally or simply doing the '1001' little jobs that needed to be done in the base/administration areas of the Canadian Army in the UK during the war years. It would have been worn by Army personnel only, not R.C.A.F.
Also, if I'm not mistaken, reinforcement personnel of the Canadian Army Infantry Reinforcement Units in the UK, wore this badge (until early 1943/after which the Canadian Infantry Corps cap badge) until such time as they were drafted to an Infantry Battalion in the field.
No sorry, these personnel had nothing to do with the purchasing of ammunition or anything similar.
Hope this helps.
Cheers
