On 2 February 1436, he led a small force including Sir Thomas Kyriell and Sir Thomas Scales and routed La Hire and Xaintrailles at the battle of Ry near Rouen. Later that year, he did much to recover large portions of land on the Pays de Caux in eastern Normandy which had been lost to the French a few months earlier. On the dawn of 13 February 1437, in spectacular fashion, he took the town of Pontoise north of Paris by surprise, threatening the capital itself for a time. The same year at Crotoy, after a daring passage of the Somme, he put a numerous Burgundian force to flight. At night on 22–23 December 1439, following a surprise flank attack on their camp, he dispersed the 6000 strong army of the Constable Richemont, and on 7 July 1440 he retook Harfleur. In 1441, he pursued the French army four times over the Seine and Oise rivers in an unavailing attempt to bring it to battle.