In 1345, Edward III launched a major, three-pronged attack on France. The Earl of Northampton attacked from Brittany, Edward from Flanders, and Henry from Aquitaine in the south. Moving rapidly through the country, Henry confronted the Comte d'Isle at the Battle of Auberoche and achieved a victory described as "the greatest single achievement of Lancaster's entire military career". The ransom from the prisoners has been estimated at £50,000. Edward rewarded Henry by including him as a founding knight of the Order of the Garter. An even greater honour was bestowed on Lancaster when Edward created him Duke of Lancaster. The title of duke was relatively new in England, with only Cornwall being a previous ducal title. Lancaster was also given palatinate status for the county of Lancashire, which entailed a separate administration independent of the crown. There were two other counties palatine; Durham was an ancient ecclesiastical palatinate and Chester was crown property.