Pale blue tactical markings for armoured car regiments?

[Chris Suslowicz]

Originally Posted by Bruce Parker

It's nice to see the photograph match Jordan's archive material on tactical markings. The "AC4" is indeed a 'HUP', but it's hard to say what kind. It may be a wireless version or a screened in machinery van. Because of where it is in the list and looking at the other types shown I would say (and it's just a guess) 'Instrument, Machinery Shop' which would be a machinery van equipped to fix radio or line equipment.

I'd suggest "Instrument Mechanic", for the AC4 vehicle, as that was a WW2-era Signals trade (later renamed to Radio Mechanic and then to Electronics Technician). It may not have been just Signals, as there would be optical equipment (gunsights and similar things) to be maintained and repaired, but for a small unit it would most likely have been Signals, for Wireless and Telephone/Telegraph equipment maintenance.

Chris.