[2][3] Alexis Muston, a 19th-century French Protestant pastor based in Bordeaux, claimed in L'Israel des Alpes (Paris 1852) that neither Duke Charles Emmanuel II of Savoy nor the Waldensians themselves had sought to wage war, and both parties were content with maintaining the peace.

Although the Waldensian population (numbering around 15,000 in 1685[4]) in certain areas of Piedmont had held privileges of tolerance and freedom of belief and conscience for centuries that were written down in several documents, these long-established rights for Protestant Italians were being violated by new decrees passed by Andrea Gastaldo, member of the council.

[5] Two decrees in particular threatened the continued existence of Waldensian communities in Piedmont: the Edict of 15 May 1650, abrogating the old Waldensian privileges, and the Edict of 25 January 1655, which was in fact a religious expulsion order:[5] That every head of a family, with the individuals of that family, of the reformed religion, of what rank, degree, or condition soever, none excepted inhabiting and possessing estates in Lucerne, St. Giovanni, Bibiana, Campiglione, St. Secondo, Lucernetta, La Torre, Fenile, and Bricherassio, should, within three days after the publication thereof, withdraw and depart, and be withdrawn out of the said places, and translated into the places and limits tolerated by his highness during his pleasure; particularly Bobbio, Angrogne, Vilario, Rorata, and the county of Bonetti.

[1] This caused a mass exodus of Waldensian refugees to the Valley of Perosa (Pérouse), and led to the formation of rebel groups under the leadership of Joshua Janavel, Jean Léger and Bartolomeo Jahier, whilst several states including England, France, Germany and the Protestant cantons of Switzerland attempted to intervene diplomatically.

[9] Lord Protector Oliver Cromwell threatened the Duchy of Savoy with intervention, somewhat shaping the military decisions made by the Duke.