On the subject of food and diets. My daughters friend, whose hubby is in the same military unit as my son called round for a coffee and a chat, and I mentioned how thin and gaunt he always looked after returning from some god forsaken part of the world he had been in; She was telling us that because they preferred to carry extra ammunition they made a 24hr ration pack last double the time, living off the land, and what they could beg, borrow, or steal. A few days later she brought us one of the packs,(I still have it)..In it is 4 small cans comprising of; 1 stewed steak,1 pickled mackerel, 1 liver paté with red peppers, 1 can of fruit, a packet of instant soup, 2 salt tablets, 2 water purification tablets, a large multivitamin tablet, 10 tiny sheets of toilet paper, a book of matches, a tiny can opener, a small folding heater and 2 tablets to use with it. She also told us they always carried a handful of resealable, or flap over plastic bags. When we asked what they were for, believe me; we wished we had never asked.