By the rules, again, of chivalrous warfare all persons found within a town taken by assault were liable, and all the male adults likely, to be killed. Bertrand du Guesclin made it a maxim before attacking a place to threaten its commander with the alternative of surrender or death; a military custom perhaps as old as war itself, and one that has descended unchanged to our own times. Only by a timely surrender could the besieged cherish any hope for their lives or fortunes; and even the offer of a surrender might be refused, and an unconditional surrender be insisted upon instead. This is proved by the well-known story of Edward III. at the siege of Calais, a story sometimes called in doubt merely for resting solely on the authority of Froissart. The governor of Calais offered to surrender the town and all things in it, in return for a simple permission to leave it in safety. Sir Walter Manny replied that the king was resolved that they should surrender themselves solely to his will, to ransom or kill them as he pleased. The Frenchman retorted that they would suffer the direst extremities rather than submit to the smallest boy in Calais faring worse than the rest. The king obstinately refused to change his mind, till Sir Walter Manny, pressing upon him the reluctance of his officers to garrison his castles with the prospect of reprisals which such an exercise of his war-right would render probable, Edward so far relented as to insist on having six citizens of Calais left to the absolute disposal of his revenge. When the six who offered themselves as a sacrifice for the rest of their fellow-citizens reached the presence of the king, the latter, though all the knights around him were moved even to tears, gave instant orders to behead them. All who were present pleaded for them, and above all, Sir Walter Manny, in accordance with his promise to the French governor; but it was all in vain, and but for the entreaties of the queen, those six citizens would have fallen victims to the savage wrath of the pitiless Edward. Two facts support the probable truth of the above narrative from Froissart. In the first place, it is in perfect keeping with the conduct of the same warrior at the taking of Caen. When the king heard what mischief the inhabitants had inflicted on his army by their vigorous defence, he gave orders that all the rest of the inhabitants should be slain and the town burnt;[45] and had it not been for the remonstrances of Sir Godfrey de Harcourt, there is little reason to doubt but that he would thus have glutted, as he craved to do, the intense native savagery of his soul. In the second place, the story is in perfect keeping with the common war-rule of that and later times, by virtue of which a conqueror might always avail himself of the distress of his enemy to insist upon a surrender at discretion, which of course was equivalent to a surrender to death or anything else.