In one of the KSTN publications from BAMA it shows a group of KSTN's (111F, 131F, 186F) for "Stabsheft Inf. 24". Have never seen this term (Stabsheft) used before. Also for Stabsheft Inf. 25, Stabsheft Inf. Div., and Stabsheft Landsch. 12.
Thx in advance.