I heard back from Scarecrow Press and they overwrote the map when they put the text selection in. It will take a few days to get it back on and I'll re-post when I can confirm that they've done it and can tell you exactly where to find it.
The website again (without the extra semicolon this time) is:
www.scarecrowpress.com
Enter "martel" into the Quick Search.
There were 4 maps of the Western Front for each year 1915-1918, nearly all identical except for colored markings that showed where aerodromes were located. The maps are so large that they could only be scanned at Kinkos on a scanner with a roller instead of a flatbed. I don't mind telling you that it hurt me to have to use a knife to cut the 1918 map out of my pristine 1939 copy so it could be scanned. The other maps are so similar that I won't cut them out just to scan them. (Does anyone else want to contribute their maps for this purpose?) Scarecrow Press, by the way, refused to scan the maps themselves for fear of damaging my only copy of the book.
--Steve