On 14 April 1808 a Swedish brigade crossed the border and went west to Aurskog, Norway.
Danish nobleman Christian August of Augustenborg successfully commanded the army of Norway and compelled the numerically superior Swedish forces to withdraw behind the border after the Battle of Toverud on April 19–20, 1808.
[1] One contributory factor behind the poor performance of the Swedish invasion force in Norway was that Russia had invaded Finland on February 21, 1808 at the start of the Finnish War.
[2][3] The success of Christian August both as a military commander at Toverud and in the subsequent battle on June 10, 1808 at Prestebakke in Østfold, and as leader of the provisional government made him very popular in Norway.
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.