The Crimean War
The Crimean War of 1854-56 was waged by allies Britain and France against Russia, and was provoked over obscure reasons. The conflict was marked by incompetence and waste of life, and is perhaps most famous for a poem written about a great blunder, "The Charge of the Light Brigade."
Battle of Trafalgar
The BBC hosts a collection of essays and exhibits about the great British naval victory over the fleet of Napoleonic France.