The force which Henry brought with him crossed the channel in thirty-six ships, and was estimated at the time at 140 men-at-arms and 3000 foot-soldiers, a very respectable army for that day; but the duke's friends in England very likely formed their ideas of the army he would bring from the breadth of his territories, and they expressed their disappointment. Henry was to win England, however, not by an invasion, but by the skill of his management and by the influence of events which worked for him here as on the continent without an effort of his own. Now it was that Ralph of Chester performed his final change of sides and sold to Henry, at the highest price which treason reached in any transaction of this long and favourable time, the aid which was so necessary to the Angevin success. Henry's first attempt was against the important castle of Malmesbury, midway between Bristol and Wallingford, and Stephen was not able to prevent its fall. Then the garrison of Wallingford was relieved, and the intrenched position of Stephen's forces over against the castle was invested. The king came up with an army to protect his men, and would gladly have joined battle and settled the question on the spot, but once more his barons refused to fight. They desired nothing less than the victory of one of the rivals, which would bring the chance of a strong royal power and of their subjection to it. Apparently Henry's barons held the same view of the case, and assisted in forcing the leaders to agree to a brief truce, the advantage of which would in reality fall wholly to Henry.