We used to have a saying about our 'compo' rations and that was '....anyone can live like a,....... er......., lets say a wally for politeness. In the tanks they had all the cooking and water facilities as old tanker says - as did the REME and engineers who usually have vhicles or light armour. Usually you'd find one of the blokes who was good with compo and he could usually dish up something quite nice and tasty by gathering all of the ration packs together, pooling it and making something good. Occasionally it was just a tub of hot stew that everyone just spooned-in and eat as they fancied. Add a bit of curry powder and.......... Yep, some quite tasty meals