The siege
The obvious target of the Duke was Calais. He first conquered some smaller English strongholds, like Oye castle (where he hanged part of the garrison), Sangatte and Balinghem. In June he started the siege of Calais, supported by large numbers of Flemish and Picard militia. The Flemish cities in fact saw a chance to deal with the Calais Staple. In total, the Duke had some 30,000 men at his disposal. He also sent a force under Jean II de Croÿ to besiege Guînes.
The militia had been very eager to take Calais quickly, but when after a few weeks it became apparent that the city, under the command of Edmund Beaufort, Count of Mortain, was well defended and provisioned, the enthusiasm quickly decreased. When a fleet under Admiral John of Horne failed to block the harbor of Calais by sinking five to six ships laden with stone, the Flemish army started to disintegrate.
When an English relief army of some 10,000 men under Humphrey, Duke of Gloucester approached, the Duke of Burgundy had no option but to raise the sieges of Calais and Guînes and withdraw.
Charles VII, called the Victorious or the Well-Served, was King of France from 1422 to his death in 1461. His reign saw the end of the Hundred Years' War and a de facto end of the English claims to the French throne.
Calais is a port city in the Pas-de-Calais department, of which it is a subprefecture. Although Calais is by far the largest city in Pas-de-Calais, the department's prefecture is its third-largest city of Arras. The population of the city proper is 67,544; that of the urban area is 144,625 (2020). Calais overlooks the Strait of Dover, the narrowest point in the English Channel, which is only 34 km (21 mi) wide here, and is the closest French town to England. The White Cliffs of Dover can easily be seen on a clear day from Calais. Calais is a major port for ferries between France and England, and since 1994, the Channel Tunnel has linked nearby Coquelles to Folkestone by rail.
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The siege of Calais occurred at the conclusion of the Crécy campaign, when an English army under the command of King Edward III of England successfully besieged the French town of Calais during the Edwardian phase of the Hundred Years' War.
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Events from the 1430s in England.
The Pale of Calais was a territory in northern France ruled by the monarchs of England from 1347 to 1558. The area, which was taken following the Battle of Crécy in 1346 and the subsequent siege of Calais, was confirmed at the Treaty of Brétigny in 1360. It became an important economic centre for England in Europe's textile trade centred in Flanders.
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Siege of Calais may refer to:
Sir Thomas Kyriell was an English soldier of the Hundred Years' War and the opening of the Wars of the Roses. He was executed after the Second Battle of St Albans.
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Château de Sangatte was a castle in Sangatte, Pas-de-Calais, France.
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The siege of Guînes took place from May to July 1352 when a French army under Geoffrey de Charny unsuccessfully attempted to recapture the French castle at Guînes which had been seized by the English the previous January. The siege was part of the Hundred Years' War and took place during the uneasy and ill-kept truce of Calais.
Kingdom of England 
Burgundian State 
Edmund Beaufort 
Humphrey, Duke of Gloucester (relief)
Philip the Good 
Jean II de Croÿ 
John of Horne