I can give you two on the Crimean War, the first that I remember reading in college and finding quite useful. The second I picked up a little while ago and recently finished. Both are fairly balanced and take into account the political situation leading to the war as well as the actual conflict.

Royle, Trevor. Crimea: The Great Crimean War, 1854-1856. New York: St. Martin's Press, 2000.

and

Figes, Orlando. The Crimean War: A History. New York: Metropolitan Books, 2010.