Map of the Somme battle of March 1918 showing the withdrawal of the 8th Division
Own work
Usedtoknowthat based off File:Map_of_German_Somme_offensive_1918.svg by Usedtoknowthat and chapter 12 of "The Eighth Division 1914-1918" by Lt.-Col. J H Boraston and Capt. C E O Bax. Naval &amp; Military press ISBN 9781843421894. Originally published 1926.