Battle of Suomenlinna

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Battle of Suomenlinna
Part of the Åland War and the Crimean War
A British illustration of the attack
Date 9–11 August 1855[1] Location Suomenlinna, Grand Duchy of Finland 60°8′53″N 24°59′11″E / 60.14806°N 24.98639°E / 60.14806; 24.98639 Result Indecisive
Belligerents
Russian Empire Grand Duchy of Finland	French Empire United Kingdom
Commanders and leaders
Aleksei Sorokin [ru]	Richard Dundas[2] Charles Pénaud
Strength
15,000 soldiers 1,500 cannons[3]	80 ships[3]
Casualties and losses
260 killed or wounded[3]	Unknown

The Battle of Suomenlinna (also known as the Battle of Viapori or the Bombardment of Sweaborg) was fought on 9–11 August 1855 between Russian defenders and a joint British/French fleet during the Åland War. It was a part of the Crimean War.