Of water we would not want to carry more than a pint each. The camels must drink, and there was no gain in making ourselves richer than our mounts. Some of us never drank between wells, but those were hardy men: most drank fully at each well, and carried a drink for an intermediate dry day. In summer the camels would do about two hundred and fifty miles after a watering; a three days’ vigorous march. An easy stage was fifty miles: eighty was good: in an emergency we might do one hundred and ten miles in the twenty-four hours: twice the Ghazala, our greatest camel, did one hundred and forty-three alone with me. Wells were seldom a hundred miles apart, so the pint reserve was latitude enough.

Our six weeks’ food gave us capacity for a thousand miles out and home. The endurance of our camels made it possible for us (for me, the camel-novice in the army, “painful” would be the fitter word) to ride fifteen hundred miles in thirty days, without fear of starvation; because, even if we exceeded in time, each of us sat on two hundred pounds of potential meat, and the man made camel-less could double-bank another, riding two-up, in emergency.