"Colonel Lemminkäinen's diary of the passage of the Finnish garrison under the walls of Constantinople in 1877-1878" is a unique book written by an anonymous author. In this work, the reader will find a living history of Finland's participation in the Russian Empire, where the heroes try to cope with the challenges of war, politics and fate. Thanks to the careful descriptive language of the author, the reader has the opportunity to be transported to the realities of those times and to visit an exciting military campaign together with Finnish soldiers. The work inspires to think about war, peace and heroism, penetrating every page with its mystery and mystery.