André Geraque Kiffer 
Battle Of Courtrai, July 11, 1302 [PDF ebook] 

As an outline of the tactical maneuver that will be tested in the simulated battle game of chapter 3, we present the Staunton chess Opening as a model, where we will consider a hypothesis (compared to chess) that employs the battle order 12, Yarmuk s or the reinforced oblique on the attacking flank, which has its best use in an attack which a smaller force (Note: in this case the inferiority is more for the relative advantage of the Flemish defense device than the French attack s, than for the effective) against an bigger one, reserving from the initial shock the weakened flank.