 Lancaster moved to surround Périgueux, but did not have the strength to capture the city and in October he was forced to withdraw with the arrival of a force commanded by Louis of Poitiers, Count of Valentinois.In September 1346, following the French defeat at the Battle of Crécy and the beginning of the English Siege of Calais, Armagnac was appointed royal lieutenant in the south-west.However due to the overall worsening French situation he was left with few troops and little money.