Non-military but a classic:
Our famously irate deputy head was supervising main hall being turned into a boxing arena, with VI th form providing labour [it beat
double maths].
"STOP!. There are lots of chairs there that weren't there when I put them there!"
Thank God his sense of humour survived the laughter. [He was the official wielder of the cane: rumoured to be chalked so that all six landed in same small area]