Rubuta ci gaba ga wannan sakin layi - Ya fara aikinsa yana yaƙi da sojojin juyin juya halin Faransa. A farkon yaƙe-yaƙe na Coalition na Farko, ya ga nasara a Neerwinden a 1793, kafin a ci shi a Wattignies 1793 da Fleurus 1794. A shekara ta 1796, a matsayin shugaban dukkan sojojin Austriya a kan Rhine, Charles ya ci Jean-Baptiste Jourdan a Amberg da Würzburg, sannan ya sami nasara a Emmendingen wanda ya tilasta Jean Victor Marie Moreau ya janye a fadin Rhine. Ya kuma ci abokan hamayyarsa a Zürich, Ostrach
, Stockach, da kuma Messkirch a 1799. Ya sake fasalin sojojin Austriya don ya ɗauki ƙa'idar ƙasa-a-makamai. A cikin 1809, ya shiga Yaƙin Haɗin Gwiwa na Biyar kuma ya haifar da babbar koma baya ga Napoleon a Aspern-Essling, kafin ya sha wahala a cikin mummunan yakin Wagram. Bayan Wagram, Charles bai ga wani muhimmin aiki ba a cikin Yaƙe-yaƙe na Napoleon.