Map of Germans Aisne offensive 1918, showing the stages of the allied retreat
Own work
Usedtoknowthat, based on File:Aisne Front 1917-Guignicourt.jpg and on a map in "The Eighth Division 1914-1918" by Lt.-Col. J H Boraston and Capt. C E O Bax, between pages 240-241. Naval &amp; Military press ISBN9871843421894. Originally published 1926. Simplified by omitting many villages, replacing formation with standard symbols.