David's heart leaped: Achmet had, then, left men behind, hidden from view; and these were now defending the position. Again came the jets of smoke, and again more Arabs dropped from their saddles. But the others still came on. A thousand feet away others fell. Twenty-two of the fifty had already gone. The rest fired their rifles as they galloped. But now, to David's relief, his own forces, which should have moved half an hour before, were coming swiftly down to cut off the approach of Ali Wad Hei's infantry, and he turned his horse upon the position where a handful of men were still emptying the saddles of the impetuous enemy. But now all that were left of the fifty were upon the trenches. Then came the flash of swords, puffs of smoke, the thrust of lances, and figures falling from the screaming, rearing horses. Lacey's pistol was in his hand, David's sword was gripped tight, as they rushed upon the melee. Lacey's pistol snapped, and an Arab fell; again, and another swayed in his saddle. David's sword swept down, and a turbaned head was gashed by a mortal stroke. As he swung towards another horseman, who had struck down a defender of the trenches, an Arab raised himself in his saddle and flung a lance with a cry of terrible malice; but, even as he did so, a bullet from Lacey's pistol pierced his shoulder. The shot had been too late to stop the lance, but sufficient to divert its course. It caught David in the flesh of the body under the arm--a slight wound only. A few inches to the right, however, and his day would have been done. The remaining Arabs turned and fled. The fight was over. As David, dismounting, stood with dripping sword in his hand, in imagination, he heard the voice of Kaid say to him, as it said that night when he killed Foorgat Bey: "Hast thou never killed a man?"