By far the biggest users of plastic cap badges in World War II were the Corps units, such as the Royal Army Service Corps, Royal Corps of Signals and the subject of today’s post, the Royal Army Ordnance Corps. These units were all very large when compared to the size of infantry regiments and so the initial investment in tooling up moulds to make plastic cap badges from was well rewarded by the large number of badges that would be needed. This also ensured the maximum saving in brass, as these units would have eaten up far more of this precious resource in cap badges than any infantry unit. The badges were generally copied directly from the standard brass badges, albeit thicker to allow the necessary depth of material to keep the badge’s strength and give enough material to attach the fixing lugs to. The badge of the RAOC consisted…