Somme (river) invasion fleet of William the Conqueror assembled in the Bay of the Somme, at Saint-Valery-sur-Somme. The river also featured in the 1346 withdrawal of Edward III of England's army, which forded the river at the Battle of Blanchetaque during the campaign, which culminated in the Battle of Crécy. Crossing the river also featured prominently in the campaign which led to the Battle of Agincourt in 1415. In 1636, a Spanish army led by Thomas Francis, prince of Carignan, crossed the Somme defeating a French army during the Thirty Years War threatening Paris. Most famously, the Battle of the Somme, during
Battle of Agincourt Saint-Remy who was present at the battle, and the other from Enguerrand de Monstrelet. The English eyewitness account comes from the anonymous "Gesta Henrici Quinti", believed to be written by a chaplain in the King's household who would have been in the baggage train at the battle. A recent re-appraisal of Henry's strategy of the Agincourt campaign incorporates these three accounts and argues that war was seen as a legal due process for solving the disagreement over claims to the French throne. Henry V invaded France following the failure of negotiations with the French. He claimed the title of King