Henry's first attack with what seems to have been a large force was on Bridgenorth castle. Robert had himself chosen to await the king's attack in Shrewsbury, and had left three of his vassals in charge of Bridgenorth, with a body of mercenaries, who often proved, notwithstanding the oaths of vassals, the most faithful troops of feudal days. He had hoped that his Welsh friends would be able to interfere seriously with Henry's siege operations, but in this he was disappointed. The king's offers proved larger than his, at least to one of the princes, and no help came from that quarter. One striking incident of this siege, though recorded by Orderic Vitalis only, is so characteristic of the situation in England, at least of that which had just preceded the rebellion of Robert, and bears so great an appearance of truth, that it deserves notice. The barons of England who were with the king began to fear that if he were allowed to drive so powerful an earl as Robert of Bellême to his ruin the rest of their order would be henceforth at his mercy, and no more than weak "maid-servants" in his sight. Accordingly, after consulting among themselves, they made a formal attempt to induce the king to grant terms to Robert. In the midst of an argument which the king seems to have been obliged to treat with consideration, the shouts of 3000 country soldiers stationed on a hill near by made themselves heard, warning Henry not to trust to "these traitors," and promising him their faithful assistance. Encouraged by this support, the king rejected the advice of the barons.