<p>As an outline of the tactical maneuver that will be tested in the wargame - simulated battle - of chapter 3, we present the model of the Sicilian Opening, where we will consider a hypothesis (compared to chess) in which Azincourt was a great French attack of opportunity that shocked head-on against a solid - ground and weapons support - English defensive position. It could have been different if Constable Albret and Marshal Boucicault had been...