A mimeographed map using different lines to illustrate the German regiments that were located behind the trenches at these two different time periods.
Order of battle showing the lines on April 6th and 26th. The map also shows the German regiments behind the lines on both those dates. It is dated April 27th and was produced by the Canadian Corps Intelligence. (The National Archives, WO 95/1049/9)
A mimeographed map using different lines to illustrate the German regiments that were located behind the trenches at these two different time periods.