Kammala jumla mai zuwa: An haifi Charles a ranar 6 ga Oktoba, 1610, ɗan na biyu na Léon de Sainte-Maure, baron de Montausier. Iyayensa Huguenots ne, kuma ya yi karatu a makarantar Protestant Academy of Sedan karkashin Pierre Du Moulin. Ya yi aiki da kyau a
kewaye Casale a shekara ta 1629. Kasancewa baron de Montausier a mutuwar babban ɗan'uwansa a 1635, shi ne wanda aka yarda da shi don hannun Julie d'Angennes, 'yar fari na Marquis da Marquise de Rambouillet. Bayan ya yi aiki a karkashin Bernard na Saxe-Weimar a Jamus a shekara ta 1634, ya koma aikin Faransa a shekara ta 1636, kuma ya yi yaƙi a yakin basasa na Rhenish na shekaru masu zuwa. An kama shi a ranar 25 ga Nuwamba 1643 bayan nasarar da sojojin Faransa suka yi a karkashin jagorancin Josias von Rantzau a yakin Tuttlingen. Ya kasance a cikin bauta na watanni goma har sai an biya fansarsa.