The Siege of Sevastopol was a major military conflict during the Crimean War (1853-1856), where the city of Sevastopol, a key naval base for the Russian Empire, was besieged by an alliance of British, French, and Ottoman forces. The siege began in September 1854 and lasted for nearly a year, resulting in significant casualties and destruction. The siege was marked by intense fighting and strategic maneuvers, including the famous Battle of Balaclava and the Charge of the Light Brigade. Ultimately, the city fell to the allied forces in September 1855, leading to a shift in power in the region and contributing to the eventual end of the Crimean War.