Rubuta ci gaba ga wannan sakin layi - Charles ya yi aure ga Marie Jeanne na Savoy amma bayan da kawunsa ya dawo a matsayin Duke na Lorraine a 1661, ya yi watsi da wannan aure kuma ya koma kotun Imperial a Vienna. Ya fara aiki a rundunar sojojin Imperial a shekara ta 1663, babban aikinsa na farko shine Saint Gotthard
a shekara ta 1664, inda ya yi aiki a karkashin kwamandan Imperial, Raimondo Montecuccoli.