The Crimean War Group was a coalition of forces that fought in the Crimean War (1853-1856). The group was composed of the Russian Empire, the Ottoman Empire, and the Cossacks, an ethnic group of people living in Eastern Europe and Central Asia. The Cossacks were a major part of the Crimean War Group, providing military support to the Russian Empire. They were known for their fierce fighting style and their loyalty to the Russian Empire.