
author
1775–1845
A Swedish military officer from Finland, he lived through the upheavals of the Napoleonic era and later wrote about the 1808–1809 war against Russia. His career linked active service, regimental command, and a firsthand view of a turning point in Nordic history.
Born in 1775 at Kiala in Porvoo, in present-day Finland, Gustaf Magnus Adlercreutz was a Swedish officer from the noble Adlercreutz family. Swedish and archival reference sources describe him as the brother of the better-known general Carl Johan Adlercreutz and note that he was active in the fighting of 1808–1809, the war in which Sweden lost Finland to Russia.
He continued his military career in the years that followed and is recorded as having served as commander of the Västgöta Regiment, taking part in the campaigns in Germany in 1813 and in Norway in 1814. He later reached the rank of general in Swedish service.
Adlercreutz is also remembered as an author of military recollections and commentary connected to the Finnish War, giving his name a place not only in army records but in the literature of the conflict. He died in 1845 at Läckö in Västergötland, Sweden.