By six o'clock the rear-guard had left Suakim, and the whole of the force moved across the plain, in parts of which the men and carts sank deep in the soft sand, while in other parts the formations were partly broken by thick bush, in which the force became somewhat entangled. The cavalry went in advance as scouts. The guns, water-carts, and ammunition-wagons were in the centre, and the Indian Brigade came last, surrounding the unwieldy mass of baggage-animals. Last of all came the telegraph detachment, unrolling as they went the wire that kept open communication with head-quarters. That a mistake had been made somewhere was obvious; but as the soul of military discipline is obedience without question, the gallant leader pressed forward, silently and steadily, whatever he may have thought. Soon the force became so hopelessly entangled in the difficulties of the way, that the rate of advance dwindled down to little more than one mile an hour. Not long after starting a trooper was seen galloping back, and Miles, who marched at the right corner of his square, observed that it was his friend Johnson, looking very stern indeed. Their eyes met. "Not half enough of cavalry," he growled, as he flew past to report, "The enemy in sight--retiring in small parties in the direction of Tamai." In returning, Johnson again rode close past the same corner of the square, and, bending low in his saddle for a moment, said to Miles, "I have signed the pledge, my boy." A slight laugh from several of those who heard him greeted the information, but he probably did not hear it, for next moment his charger cleared a low bush in a magnificent stride, and in a few seconds man and horse were lost to sight in the bush. "More need to sign his will," remarked Simkin, in a somewhat cynical tone. "He has done that too," said Armstrong. "I heard him say so before we started." The troops were halted to enable the two generals to consult at this point. While the men stood at ease, enjoying the brief rest from severe toil under such a burning sun, our hero heard a low voice at his elbow say-- "Have _you_ signed your will, John Miles?" It was a startling, as well as a sudden, question! Miles turned quickly and found that it was Captain Lacey who had put it. The feeling of dislike with which our young soldier had regarded the captain ever since his interruption of the conversation between himself and Marion, on board ship, had abated, but had not by any means disappeared. He had too much sense, however, to allow the state of his feelings to influence his looks or bearing. "Yes, sir," he replied; "I made it out last night, as you advised me, in the service form. It was witnessed by our colonel and Captain Smart and the doctor. To say truth, I thought it absurd for a man who has nothing to leave to make his will, but as you said, sir, I should like my dear mother to get my kit and any arrears of pay that may be due to me after I'm gone."