The night was a dark one and a strong wind was blowing, so that Beric's party reached their station unheard by the sentries on the walls of the camp. It was an hour before they heard a distant shout, followed instantly by the winding of a horn, and the loud war cry of the Iceni. At the same moment the trumpets in the Roman intrenchments sounded, and immediately a tumult of confused shouting arose around and within the camp. Beric remained quiet for five minutes till the roar of battle was at its highest, and he knew that the attention of the Romans would be entirely occupied with the attack. Then the boats were again towed along until opposite the centre of the horseshoe; the men took their places in them again and poled them across the river. The fifty men who accompanied the Sarci carried bundles of rushes dipped in pitch, and in each boat were burning brands which had been covered with raw hides to prevent the light being seen. They were nearly across the river when some sentries there, whose attention had hitherto been directed entirely to the walls, suddenly shouted an alarm. As soon as the boats touched the shore, Beric and his men leapt out, passed through the half built boats and the piles of timber collected beside them, and formed up to repel an attack. At the same moment the others lighted their bundles of rushes at the brands, and jumping ashore set fire to the boats and wood piles. Astonished at this outburst of flame within their camp, while engaged in defending the walls from the desperate attacks of the Iceni, the Romans hesitated, and then some of them came running down to meet the unexpected attack. But the Sarci had already pressed quickly on, followed by some of the torch bearers, and were in the midst of the Roman tents before the legionaries gathered in sufficient force to meet them. The torches were applied to the tents, and fanned by the breeze, the flames spread rapidly from one to another. Beric blew the signal for retreat, and his men in a solid body, with their spears outward, fell back. The Romans, as they arrived at the spot, rushed furiously upon them; but discipline was this time on the side of the Sarci, who beat off all attacks till they reached the river bank. Then in good order they took their places in the boats, Beric with a small body covering the movement till the last; then they made a rush to the boats; the men, standing with their poles ready, instantly pushed the craft into the stream, and in two minutes they were safe on the other side.