The Johan August Sandels reference article from the English Wikipedia on 24-Apr-2004
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Johan August Sandels

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Count Johan August Sandels (1764-1831) was a Swedish soldier and politician, being appointed Viceroy of Norway (Riksståthållare) 1818 and Field Marshal in 1824. He also served as acting Over-Governor of Stockholm in 1815. In the Finnish War (1808-1809) he led the Swedish troops to victory, against the Russian forces, at the Battle at Virta Bridge. These events and others in of the Finnish War were late retold in a series of epic poems by Johan Ludvig Runeberg.

See also: List of Swedish military commanders, List of Swedish wars