Siege of Sveaborg

Overview

The siege of Sveaborg was a siege by Imperial Russian forces of the sea fort of Sveaborg, off the coast of Helsingfors (Helsinki); at the time Finland was part of the Kingdom of Sweden. It took place in the spring of 1808, during the Finnish War. Despite its formidable reputation as "the Gibraltar of the North", the fortress surrendered after a siege of two months. As its capitulation was followed by the rapid collapse of Swedish resistance elsewhere, and ultimately the Russian conquest of Finland, the siege is often regarded as the decisive battle of the war.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The siege of Sveaborg stands as the decisive engagement of the Finnish War. Despite the fortress's formidable reputation as 'the Gibraltar of the North,' Swedish commander Carl Olof Cronstedt surrendered the sea fort off Helsingfors to Russian forces under Jan Pieter van Suchtelen and Friedrich Wilhelm von Buxhoeveden after two months, even though the Swedish garrison of 7,500 outnumbered the Russian besieging force of 6,500. The capitulation removed the strongest Swedish defensive position in Finland and triggered the rapid collapse of Swedish resistance elsewhere in the theater. That sequence of events led directly to the Russian conquest of Finland, ending Swedish sovereignty over the territory and making the fall of Sveaborg the hinge on which the entire war turned.

Forces & casualties

Commanders (3)