Ten top books about World War I

At The Barnes & Noble Book Blog Molly Schoemann-McCann tagged ten "books [that] will amaze and educate readers as we remember World War I on its centennial," including:
The Guns of August, by Barbara W. Tuchman

It could be argued that the greatest nonfiction books read like fiction, which is the case with Tuchman’s intensely detailed look at the tragically ruinous first 30 days of World War I.