Advis de la deffaicte des Anglois et autres heretiques / venuz en Bretaigne, pour le Roy de Navarre, pres Chasteau-bourg.

A first-person military dispatch recounts operations in Brittany: it details troop movements, negotiations over prisoners under pressure from foreign rulers, and sharp debate among commanders about whether to defend or withdraw before Rennes. The narrator describes joining forces, conducting reconnaissance, and ambushing the approaching English and allied contingents near Chasteaubourg, producing a rout with heavy casualties and multiple prisoners. The report records losses on both sides, preparations to besiege Rennes, and differing strategic views, while attributing the unexpected victory to divine providence.