The Battle of Crotoy was a naval battle which occurred on 25 June 1347 at the mouth of the Somme off the Le Crotoy, when a French fleet of 40 ships gathered in attempted to relieve Calais, where an English army under the command of King Edward III of England was besieging the French town during the Edwardian phase of the Hundred Years' War.
An English fleet commanded by William de Bohun, Earl of Northampton and Laurence Hastings, Earl of Pembroke defeated the French fleet.
With the relief attempt foiled, Calais capitulated in early August 1347, giving England a durable continental bridgehead and a forward base that shaped Channel warfare for generations. The episode is consistently placed by historians as one of the closing moves that made the surrender inevitable.
Tout, T.F. (1969). The History of England From the Accession of Henry III to the Death of Edward III. (1216–1377). New York: Haskell House Publishers.
The site of Battle of Crotoy (1347) lies on Triassic Rocks (Undifferentiated), bedrock that formed in the Triassic. The rock here is mudstone, siltstone and sandstone.
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