Am I thick for not knowing exactly what RTC is? I think it is Recruit Training Centre but I could be horribly wrong, and I am usually good at deciphering TLAs and MLAs. (At least I thought I was until I became a member of ARRSE, anyway.)
I don't know if BB remembers them, but there was a Lt in our Bn who was involved in the PECOC stuff and was always sporting interesting new kit. In the days before UORs and such pressure on kit, the MoD used to come up with all sorts of silly things to make.