'Jena' or 'Sedan'?

London: W. Heinemann, 1904. First English language edition. Octavo in dark blue-grey illus boards; 361 p.; 19 cm Near Fine with gently rubbed boards corners; tiny coffee/tea stain to first 203 pages and only discernible on title page wher ether is a very thinhg half inch smudge. Easily erased with strong/gritty eraser. . Hardcover.

Translation of: Jena oder Sedan? Beyerlein lived from 1871-1949. An uncommon title. Germany. Heer -- Fiction. Military Life-- Criticism. Peace. War. Military fiction. Officers.