Well just wait till they bump into a CWSM or CSSM lor.. Can just
imagine the keh kiang platoon i/c stamping his feet loudly,
shouting 'platoon diam!' and then saluting the OCT from 20m away,
leaving his own PC too stunned for words. 
But understandable lah, i think if i were in the REC's shoes, new
to the army, i'd be super awed too by the large and unique ranks on
the epaulettes.