Why Agincourt 1415 you ask? It was the greatest feat of arms in English History. October 25, 1415 a force of 6000 English Archers trapped by 30,000 French Knights in a muddy field. The English Archers defeated the 5 times larger force of French causing the death of over 5,000 French with the loss of only 300 English. Read Shakespear's Henry the Fifth.