Henry V and Agincourt and Crecy, oh wait what was the question? Actually Admiral Horatio Nelson was the true genius in that war. It was his adept maneuvering against superior naval forces that allowed and supported much of Wellington's victories in Spain and later. Without it there would be know way the British could have maintained forces in Spain in the first place. Probably the finest naval commander in history. But, like always, land commanders geta ll the credit and everyon ignores what the anvy did. Plus much of the war was also won in the overseoles of France and England and the loss of trade and money provided by naval embargoes.