As usual, the initial fighting broke out in the west. Henry de Montfort scored an early triumph by bottling up Edward in Gloucester, but then unwisely accepted his cousin’s call for a truce. He had no sooner withdrawn his forces when Edward sacked the town and slipped away, causing Simon to bitterly reproach his son. The king meanwhile began gathering a large army at Oxford, where one of his first acts was to expel the student population. His intention, he explained, was to protect them from the savagery of his Scottish allies, but in fact he was clearly miffed by their true sympathies. Henry’s growing strength allowed him to brush aside a last-ditch offer by his opponents to respect Louis’ ruling on every point except the alien officials. The advantage was all his after he seized the Montfortian stronghold of Northampton, which was betrayed by local clergymen. The loss was devastating. Among the eighty barons and knights made prisoner were the younger Simon and many leading members of the movement. Montfort refused to despair. “War is such that the advantage first goes to these, then to those,” he declared and followed up by predicting that the enemy would be consumed by fear and confusion before May was out. London, however, was gripped by panic as word spread it was about to be betrayed like Northampton, resulting in the plunder and massacre of the Jews. As royalist forces burned and butchered their way through local hamlets, Simon attempted to draw them south by laying siege to their garrison in Rochester, whose inhabitants were subjected to a similar bloodletting. With barely London left to the reformist party, Simon gambled everything on seeking out and giving battle to the king. The two sides squared off in Sussex, with the royalists encamped in and around the village of Lewes and the Montfortians eight miles away in Fletching. Simon sent his bishop friends to Henry to reiterate his offer of peace if the king would observe only the provision prohibiting alien officials, sweetening it now to include 30,000 marks in compensation. Henry was inclined to accept, but Richard, aggrieved that his property had been ransacked, was against it, as was Edward. The one-time idealist and reformer declared that peace was only possible if his uncle and the others came to them with halters around their necks.