(October 1853February 1856) War fought mainly in the Crimea between the Russians and an alliance consisting of the Ottoman empire, Britain, France, and Sardinia-Piedmont.
It arose from the conflict of great powers in the Middle East and was more directly caused by Russian demands to exercise protection over the Orthodox subjects of the Ottoman sultan. The war was managed and commanded poorly by both sides. Battles were fought at the Alma River, Balaklava , and Inkerman, before the besieged Sevastopol was taken by the allies. Disease accounted for many of the approximately 250,000 men lost by each side. After Austria threatened to join the allies, Russia accepted preliminary peace terms, which were formalized at the Congress of Paris . The war did not settle the relations of the powers in Eastern Europe, but it did alert Alexander II to the need to modernize Russia.