Mick, Do the Brit ration packs come with chemical heating units,or is a stove neccessary? My rucksack always has a minimum of 2 MRE main meals and heaters, 1/2lb beef jerky, 1lb homemade fruitcake, 1 block of chinese black tea,1/2lb of chocolate,1/2lb dehydrated fruit,1/2lb of oatmeal, 35mm film canisters of sea salt and pepper. I 've been trying to locate Knorr's Erbswurst, a concentrated split pea and bacon soup mentioned in many older adventure and camping texts and Pilot bread, a wheat cracker. Trying out old methods and supplies can give insights for the new.