Rare Gefechtstaktik des verstärckten Bataillons, Major Kühlwein – with pre war Dutch intelligence service markings(!)

Rare Gefechtstaktik des verstärckten Bataillons, Major Kühlwein – with pre war Dutch intelligence service markings(!). This pre war German tactical combat manual was printed in 1936. On the first page one can see the ink markings Generale Staf, III e afdeeling, RB. D, No. Alg. 279 – indicating it would have been a part of the pre war Dutch intelligence service of the General Staff of the Dutch army. This section of the General Staff existed only bewteen 1914 and 1940. Besides a interesting pre war tactical manual this is a nice historical piece!