All-
Not sure if this is well known, but the 721 page book "251 Division of the German Army that Participated in the War (1914-1918)" is online and free to download.
Here is the link-
http://www.vlib.us/wwi/resources/germanarmywwi.pdf
251 Divisions - free download
Moderator: sniper1shot
251 Divisions - free download
M.Abicht