I can remember very often having my dinner ( we didn't do "Lunch") in one of those Martyn - minus the Red Crosses, of course!
I remember one dreadful rainy day in Germany in the sixties - inside a tent just like that - when the sky was so dark at noon - we had the lights on inside. The rain was drumming on the roof - making conversation all but impossible. Suddenly, the petrol generator supplying the lighting died ( run out of petrol - 'cos the geezer was scoffing his dinner - see!). The light died altogether and we were sitting in the pitch black gloom! Spirits already low, sank further - until.............
A cockney voice at the rear of the tent spouted up with......................."Good 'ere.....Innit?"
Couldn't help larfin'. Became a catch-phrase................ Squaddies humour........can't beat it. jb