 Complete the following phrase:  The next attack came in 1345, when the Earl of Derby overran the Agenais lost twenty years before in the War of Saint-Sardos and took Angoulême, while the forces in Brittany under Sir Thomas Dagworth also made gains. The French responded in the spring of 1346 with a massive counter-attack against Aquitaine, where an army under John, Duke of Normandy, besieged Derby at Aiguillon. On the advice of Godfrey Harcourt like Robert III of Artois, a banished French nobleman, Edward sailed for Normandy instead of Aquitaine. As Harcourt predicted, the Normans were ill-prepared for war, and many of the fighting men were at Aiguillon. Edward sacked and burned the country as he went, 