Thanks all (especially Hannes for excellent information)...
Now it seems rather clear for me...

...AFP Gallwitz was later in Aug 15 renamed to AFP 12.
I have that they later in 1916 was situated in Lida in White Russia...
AFP 12 was later renamed to
new AFP 14 (Italy) in Sep 1917, before it lastly was renamed to AFP 17 in early 1918.....puh...!
Now it is only to find what Georg von Tschudi was doing in 1918 after leaving his command of FEA 7....
Gunnar