Burnet turned his glasses towards the body of horsemen. They had changed their course, and were now galloping eastward, in the direction in which the aeroplane had come down. Smitten with misgiving, Burnet slipped the glasses back into their case, hurried down the slope, and set off at his best pace towards the spot where he feared his friend was in peril. It was hard going. When he had left the sandy neighbourhood of the tell, he had to skirt swamps, cross wadys, and sometimes to force his way through thick masses of reeds. To make matters worse, his view was circumscribed by the rushes and tall grass, so that he could only gauge his general direction by the sun.
After half an hour's exhausting progress he began to wonder whether he had not overshot the mark. He had seen no sign of the horsemen, nor of the aeroplane, which must stand higher than they. In this trackless and desolate region he might wander as in a maze. But just when the difficulties of the situation were weighing his spirits down to the point of despair, he was suddenly startled by the rattle of a machine-gun not far ahead, the crackle of musketry, and loud cries.
At this moment he was on the edge of a reedy swamp, like those which he had skirted more than once since he left the tell. He felt that it was no time for caution, and plunged into the yielding surface, sinking in first up to his ankles, and soon finding himself in deep water where it was necessary to swim. Wading toilsomely through the slime beyond, he scrambled ashore, coated with mud and green scum, and dashed through the reeds, guided always by the continuous sounds of conflict. A quarter-mile of stumbling, wading, dragging his mud-caked boots brought him to the edge of a belt of rushes that separated the morass from a broad clear space beyond, and as he plunged through the tall flags he dreaded what he might see on the other side.
By this time the firing had ceased. When he parted the screen of rushes and peered through he saw the aeroplane not far from the centre of the open space. Near it Captain Ellingford lay on the ground, guarded by two Turkish troopers. Forty or fifty other Turks were intently examining the machine. A little beyond it were several prone forms, and farther away the horses of the troop were bunched together in the charge of half a dozen men.
The Turks were too much occupied and interested to observe the face peering at them through the rushes. After a rapid glance that took in all the details of the scene Burnet stepped silently back under cover. There came to his ears the sounds of an animated conversation between the officer in command and his subordinates. He could not understand what they said, but guessed that they were discussing in perplexity the question what to do with their prize. Presently the officer gave a series of sharp orders, and parting the rushes to make for himself a peep-hole, Burnet saw the greater number of the men cross the space and mount their horses. A few of them then rode off in different directions, no doubt to act as vedettes and give warning if an enemy approached. The remainder lined up and awaited further orders.
Meanwhile the officer resumed his conversation with the men he had retained. It was clear from their puzzled looks that they could come to no conclusion about the disposal of the aeroplane. Burnet guessed that they were unwilling to destroy a machine which would be useful to their own army; but the problem how to convey it to their lines, probably a good many miles away, over country that was one long succession of swamps, was evidently beyond them.
After a time, however, it appeared that light had dawned. Burnet heard the word wady several times repeated, and though his ignorance of Turkish prevented him from understanding in what connection it was used, it gave him a clue to their next step. The officer sent one of the men to convey an order to the mounted group. A dozen of the troopers rode away westward, in the direction of the Euphrates. The rest dismounted again. While some of them brought picketing ropes and attached them to the aeroplane, others began to beat down the rushes that edged the northern boundary of the open space. Then two of the horses were yoked to the ropes, and dragged the machine slowly towards the track which the troopers were hastily making. Burnet came to the conclusion that they intended to draw the aeroplane to a wady somewhere to the north, float it there, perhaps on an extemporised raft, and so convey it to the river.
As soon as the aeroplane began to move, the officer gave an order to the two men standing sentry over Captain Ellingford, and then Burnet saw for the first time that his friend was wounded. The Turks helped him to his feet, with a care that showed a certain chivalrousness, and supported between them he limped after his machine.
Burnet felt utterly helpless. Alone against forty or fifty men, he could do nothing, either to rescue his friend or to save the aeroplane. True, night was approaching: the Turks could not complete their preparations for floating the machine that day; he might follow them up on the chance of finding an opportunity in the darkness of getting the captain away, if not of destroying the engine. But on second thoughts he recognised the almost certain futility of such a course. Ellingford was wounded, probably unable either to endure the fatigue of walking or to sit a horse. It was scarcely likely that circumstances would again favour such audacious but hazardous schemes as had already twice won success. Burnet felt that an attempt to make off with a couple of horses would be to strain good fortune too heavily. Yet it went utterly against the grain to allow a British officer to remain a prisoner with the Turks, or a British aeroplane to take place in a Turkish flight.
One resource remained, but Burnet's heart sank as he thought of it. Rejeb might help him, but Rejeb was twenty odd miles away. Was it possible, tired as he was, to tramp all those weary miles back to the stronghold, with only an hour's daylight left, and after that no guide but the stars? How he wished that he had retained his mounted escort until he had actually met Captain Ellingford! But regrets were vain. The attempt must be made, and without loss of time, for he had to reckon with the chances of going astray, consequent delay, arriving at the stronghold too late for Rejeb to render any effective assistance, the possibility that troopers had already been despatched northward to acquaint the Turkish authorities with the capture of the aeroplane, and that by the morning the small body of cavalry would have been augmented.