Swords of Sovereignty (Epées souveraines) is the 11th module in the series Au Fil de l'Epée (By The Edge of the Sword).
It covers two of the most important battles of the XIIIth Century, Bouvines 1214 and Worringen 1288, which are, respectively, the 33rd and 34th battles in the series. Bouvines is a new edition, much expanded, with new map, counters, and scenario specific rules of the game published in 2002 in Vae Victis #45.
The game includes:Battles:
- Bouvines, 27 July 1214 (Phlippe II Auguste, King of France vs. Emperor Otton IV of Brunswick)
- Worringen, 5 June 1288 (John, duke of Brabant vs. Siegfried, Archibishop of Köln)
The game features one historical scenario and one "what if?" scenario per battle