 Kubudirira kwaChristian August semutungamiriri wemauto paToverud uye muhondo yakazotevera musi waChikumi 10, 1808 pa in Østfold, uye semutungamiri wehurumende yenguva pfupi yakamuita mukurumbira muNorway. Muna 1808 Christian August akasimudzirwa kuva Field Marshal, uye muna 1809 akava Gavhuna Mukuru weNorway. Muchinda Christian August airemekedzwawo zvikuru muSweden nokuti akanga arega kutevera uto reSweden rakanga richidzokera shure apo nyika iyoyo yakanga ichimanikidzwa neRussia muHondo yeFinland. Somugumisiro, Christian August akasarudzwa kuva Muchinda weSweden somutsivi pachigaro choumambo cheSweden pashure pokubviswa paumambo kwaMambo Gustav IV Adolf akanga asina kukwanisa kuita basa. 