Book excerpt: 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 heard, and after updating the battle plan - by the terrain and the enemy situation - had taken a more appropriate offensive device. When an Arab or Double Perpendicular battle order would then be employed, that is, simultaneous pressure on two flanks - in this simulation at the northern and southern entrances of the Tramecourt-Azincourt clearing - which would require numerical, geographical, and moral superiority.