Soldbuch to J. Zimmermann, Eisb. Pi. Komp 57, Pi. Btl (Kroat) 373 as part of the Kroatische Ausbildungs Brigade. They were part of the 373. Infanterie-Division (kroatisch) and performed a constant resistance against Partisans in the area. 

The Soldbuch is in good, complete conditon with uniform photo of Zimmermann inside. 

Interesting Soldbuch!