The relief from the awful strain of having that rear-guard so close to us was too much for Webster or one of his men, because for a moment I saw the barrel of a rifle appear behind their rocks and almost expected to hear a cheer. The rifle disappeared as if someone had pulled it down violently. By this time the caravan was in a state of the most hopeless confusion, totally unable to move either upwards or downwards; many camels had fallen, others were kneeling and refused to move; some were facing one way, some the other. The frightened camel leaders had given up any attempt to restore order and were gradually moving up the path as if to escape themselves, even if they could not bring their camels with them. Only the upper few zigzags were now in sunlight; the gloom down at the bottom was increasing very rapidly, and unless the Arabs there had worn fairly white clothes we should not have been able to see them as they scrambled among the boulders, to disappear out of sight round that corner. I realized now that when the sun sank still lower, and the gloom increased still more, we should be able to see nothing whatever to fire at down below. And, too, I had never thought that if they tried to defend the approach to the gorge they might take up a position round that corner where our fire could not reach them. They were evidently doing this, and it upset my scheme still more. I knew enough of soldiering to know that a small force, well posted behind rocks, could hold the mouth of that ravine (the crack in the "coffee-cup") for an almost indefinite time against a very much superior force. If the _Intrepids_ were actually advancing, and had not brought Maxims or field-guns, these Arabs, with their "backs to the wall", could keep them at bay for the three and a half or four remaining hours of daylight. If so, they might be able during the night to withdraw a remnant of the caravan, and in the dark our five rifles and six hundred cartridges would not stop them. There was only one thing to do. It sounds heroic, but there was no thought of heroism. Those men still scrambling to the bottom and the men of the rear-guard must be stopped. We five must open fire on them and compel them to remount the zigzag to attack us, and therefore prevent them joining those who had already issued from the "coffee-cup" to defend it against the _Intrepid’s_ people. If I could only have been certain of what was actually happening down there, outside our line of vision, we might have waited; but I did not know, and it was absolutely necessary to do something, and to do that something quickly. We had to take the risk that perhaps after all the _Intrepids_ had not landed, and that directly we opened fire the whole force of Arabs would turn back and overwhelm us. I told Jaffa and Griffiths that we must open fire. Griffiths nodded. "Just as you like sir; I’m ready."