The Battle of Agincourt was an English victory in the Hundred Years' War. It took place on 25 October 1415 near Azincourt, in northern France. The unexpected victory of the vastly outnumbered English troops over the French army boosted English morale, crippled France, and began a new period of English dominance in the war. This advantage lasted for 14 years, until England was defeated by France in 1429 during the Siege of Orléans.