Frank54 Posted 29 October , 2022 Share Posted 29 October , 2022 Good day, I acquired that map from a Canadian collection. It is an ordnance survey, dated april 1917 of the area of Doullens/Albert in the Somme. It is marked: sheet 57D, Edition 2. Scale 1:40,000. My question is related to the traits in red and in green in the map. What does it represent? This map Link to comment Share on other sites More sharing options...
Frank54 Posted 29 October , 2022 Author Share Posted 29 October , 2022 Good day, It appear that some text disappeared. This map was acquired from a Canadian collection. There was a Canadian hospital in Doullens that was bombed in may 1918. I think that the Albert area was part of the 1918 spring offensive. Thank you! Link to comment Share on other sites More sharing options...
EDWARD1 Posted 31 October , 2022 Share Posted 31 October , 2022 The red appears to follow the lines of tramways. The green a main road. Link to comment Share on other sites More sharing options...
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