At full speed the Egyptian chariots dashed down the declivity to the causeway. This was the signal for the Rebu archers to draw their bows, and in an instant confusion was spread among the first line of chariots. The horses wounded by the missiles plunged madly. Many, stepping between the fagots, fell. For a moment the advance was checked, but the Egyptian footmen, entering the swamp waist-deep, opened such a terrible fire with their arrows that the front line of the Rebu were forced to fall back, and the aim of their archers became wild and uncertain. In vain the king endeavored to steady them. While he was doing so, the first of the Egyptian chariots had already made their way across the causeway, and behind them the others poured on in an unbroken column. Then through the broken lines of spearmen the Rebu chariots dashed down upon them, followed by the host of spearmen. The king’s object was to arrest the first onslaught of the Egyptians, to overwhelm the leaders, and prevent the mass behind from emerging from the crowded causeway. The shock was terrible. Horses and chariots rolled over in wild confusion, javelins were hurled, bows twanged, and the shouts of the combatants and the cries of the wounded as they fell beneath the feet of the struggling horses created a terrible din. Light and active, the Rebu footmen mingled in the fray, diving under the bellies of the Egyptian horses, and inflicting vital stabs with their long knives or engaging in hand-to-hand conflicts with the dismounted Egyptians. Amuba had charged down with the rest of the chariots. He was stationed in the second line, immediately behind his father; and his charioteer, mindful of the orders he had received, strove, in spite of the angry orders of the lad, to keep the chariot stationary; but the horses, accustomed to maneuver in line, were not to be restrained, and in spite of their driver’s efforts charged down the slope with the rest. Amuba, who had hunted the lion and leopard, retained his coolness, and discharged his arrows among the Egyptians with steady aim. For a time the contest was doubtful. The Egyptian chariots crowded on the causeway were unable to move forward, and in many places their weight forced the fagots so deep in the mire that the vehicles were immovable. Meanwhile, along the swamp on both sides a terrible contest was going on. The Egyptians, covered by the fire of their arrows, succeeded in making their way across the swamp, but here they were met by the Rebu spearmen, and the fight raged along the whole line.