For several crucial months after the war that brought the Mansfeld Regiment to Milan ended, its superiors forgot it existed and failed to secure funding for it. In summer 1627, the regiment disintegrated. Although Wolf von Mansfeld wanted the regiment to travel north from Milan to liaise with the forces of Albrecht von Wallenstein, it mutinied on the way through Switzerland and only 600 starving men reached Frankfurt am Main. Because these soldiers proceeded to mistreat civilians in the region, this chapter also analyzes atrocities in a flash-back to October 1625. During that horrific month, the Mansfeld Regiment suffered numerous attacks including an incident in which twenty soldiers were killed and their bodies were never found. They retaliated by sacking two small settlements near Alessandria. This chapter also situates the Mansfeld Regiment within events after it fell apart: The eventual Franco-Spanish War of 1635–1659.