Siege of Harfleur - English before the siege. 18 August -  22 September  1415, during Hundred Years' War. Under the command of King Henry V, English troops forced the French to surrender Harfleur, (Normandy, France).Henry V of England, ruled from 1413 until death. 16 September 1387 – 31 August 1422.  (Photo by Culture Club/Getty Images) *** Local Caption ***