Tuhia he tomokanga mo tenei whitianga - I mohiotia a Charles ko te Count of Harcourt-Elbeuf i te wa e ora ana tona papa; mai i te 1650, i whakaingoatia e ia ko te "prince d'Harcourt", ko te rohe o Harcourt tetahi o nga taitara tuarua a tona papa. I mahi ia i Itari (1641) me Picardy (1642) i raro i te whakahau a tona matua keke a Henri, Count of Harcourt. I whai wāhi nui a Charles ki te Pakanga Toru tekau Tau; i a ia me "le Grand Condé" (i te wa o te Duke o Enghien) i te wikitoria rongonui i Rocroi i te tau 1643. I uru hoki a Charles ki nga pakanga i Thionville me Sierck, me te whakapae o Gravelines (1644); i whawhai ia i te Pakanga o Nördlingen
(1645) tae atu ki Trier.