Had you ever heard of the Battle of Coronel? Me neither. It was an engagement early in World War I off the coast of Chile in which the British lost 1,660 sailors. The Yorkshire Post, in a book review, calls it "Britain’s worst naval disaster for a 100 years."
Thomas E. Ricks covered the U.S. military from 1991 to 2008 for the Wall Street Journal and then the Washington Post. He can be reached at email@example.com.