In parallel with his service in civic administration, Frisching also continued with his military career where opportunities arose. In 1712, by now aged 74 he was the General who took command of the Protestant confederate army in the Second War of Villmergen after the army commander Nicolas de Diesbach and his lieutenant Jean de Sacconay had both been badly wounded at Villmegen. Frisching is credited with having turned an impending rout into a victory on 25 July 1712.