This unique assessment of a disastrous episode in British military history is taken in part from the diary and maps kept by Ralph Tanner, who served with 2nd Battalion The Kings Own Yorkshire Light Infantry during the retreat, and from the official Battalion war diary by Major Chadwick. It includes background to the mobilization of the Battalion, and considers the series of disasters which left them increasingly unable to fight as a unit. It also addresses the factors which prevented optimum military performance, includes discussions with the author's one-time enemies, and serves as a tribute to the strength of the men of the battalion.