sentences:  With the local English troops dispersed, the people of Reims switched allegiance and opened their gates, which enabled the coronation of Charles VII in 1429 at Reims Cathedral.A few years later he ended the English-Burgundian alliance by signing the Treaty of Arras in 1435, followed by the recovery of Paris in 1436 and the steady reconquest of Normandy in the 1440s using a newly organized professional army and advanced siege cannons.Following the battle of Castillon in 1453, the French expelled the English from all their continental possessions except for the Pale of Calais.