The success of Christian August both as a military commander at Toverud and in the subsequent battle on June 10, 1808 at in Østfold, and as leader of the provisional government made him very popular in Norway. In 1808 Christian August was promoted to Field Marshal, and in 1809 he became Governor-general of Norway. Prince Christian August was also held in high esteem within Sweden because he had refrained from pursuing the retreating army of Sweden while that country was hard pressed by Russia in the Finnish War. Consequently, Christian August was elected Crown Prince of Sweden as successor to the Swedish throne after the overthrow of the incompetent King Gustav IV Adolf.