Ignorant of the strength of the attacking party, Henry believed that it was the reinforcements under the Duke of Brittany that had come up. At the same moment the third division of the French, whose leaders were also similarly deceived, halted and faced round. Believing that he was about to be attacked in front and rear by greatly superior forces, Henry gave the order that all prisoners should be killed, and the order was to a great extent executed before the real nature of the attack was discovered and the order countermanded. The third division of the French now continued its retreat, and the battle was over. There remained but to examine the field and see who had fallen.