Keywords: First Battle of Passchendaele - barrage map (colour balance).jpg 1 10000 scale army artillery barrage map from the First Battle of Passchendaele during the Third Battle of Ypres Exerpt from Australian War Memorial www awm gov au <br>http //blog awm gov au/awm/wp-content/uploads/maps/Broodseinde_barrage pdf 1917 Field Survey Company Royal Engineers Image First Battle of Passchendaele - barrage map original jpg Original Image First Battle of Passchendaele - barrage map jpg Cropped w/ rotation PD-AustraliaGov OldOS Maps of the First Battle of Passchendaele Ordnance Survey military maps |