From Germa documents and translated and compiled at the US Army War College,Washington,1917.
The topics are; Barrage against airplanes, Note for the artillery in the region of Ypres, Information drawn from the use of the light machine gun,mod.1908-15, in the Sixth Army, the German artillery in line on both banks of the Meuse,Aug.20,1917, the transmission of intelligence in the German Army, and many many more topics.

http://www.archive.org/details/germannotesonmin00washrich


A Survey of German Tactics,1918.
http://www.archive.org/stream/surveyofgerm...age/n1/mode/2up

Both documents are from the American Libraries Internet Archive.

Joe