[ame="http://www.youtube.com/watch?v=i80HZQjEFu8&feature=related"]YouTube- The Battle of Agincourt[/ame]

The interesting thing about the English Bowman is the Crown had an interest in maintaining a strong community of Longbowman in that period of time, so much so that if a man could draw a full Long Bow they received a payment from the Crown.

That means at Agincourt, the French vassels of the Crown saw this:

[ame="http://www.youtube.com/watch?v=vAUp1ripJLE&feature=related"]YouTube- Battle of Crécy - A French perspective[/ame]

Every 20 seconds or so, the rate of fire of a long bow could be devestating indeed.