La Guerre Moderne

This is a huge watercolor point to point board game of French battles in WWI that was drawn in 1915. It does not have a title but the internet says its "La Guerre Moderne". The internet also said it was published in 1914 but you can see on the bottom Série 1915 (Series 1915). There appears to be an artist's name in the bottom left corner but it is not readable.