But fierce as they had found the combat, neither Collingham nor Icingla was daunted. No sooner were their wounds dressed and bound up by the anchorite than, assembling the men by the light of the moon, they took a solemn oath, by the cross on the hilt of the knight’s sword, not to sleep under a roof, nor to dine in a hall, nor to drink a brimming can at a chimney corner, till Prince Louis and the French were expelled from England. At the same time, every man present--Oliver Icingla included--engaged never to decline a combat with three of the enemy, and to yield implicit obedience to the commands of their leader, upon which Collingham swore to relieve them from their promise if he was known to shrink from an encounter single-handed with six of the enemy. And now every man understood what he was expected to do, and the work was begun with spirit, and the camp of refuge soon boasted of a thousand men, mostly archers, who attacked the French, and the Anglo-Normans who sided with them, whenever an opportunity presented itself, and, as historians tell us, made themselves particularly formidable when Louis marched into Sussex to take possession of the county. “Louis, availing himself of John’s weakness,” says Carte, “sent William Fitzpiers, Earl of Essex, and Robert Fitzwalter, and William Huntingfield into Essex and Suffolk, and marching himself into Sussex, took all the fortresses in the county, but could not quell William de Collingham, who, with a thousand archers, made incursions from the woods and forests in those parts, killed several thousands of the French in different encounters, and held out all the time that the hostilities lasted. There was no attacking this man,” adds Carte, “in the fortresses wherein he kept without great disadvantage.” It was not, however, till the French had learned by severe experience what manner of man Collingham was, and the ferocity of his “Ravens”--for so his followers were called, from the fierce raven on his banner--that they came to regard him as invincible and his camp as impregnable. In the effort to put him down, more than one continental warrior of high name was tried and found wanting. Especially did there fail in this endeavour a very valiant captain of free lances, who had been entrusted with the castle of Lewes, and who was deemed equal to any enterprise of the kind.