In particular , Franz Walter Stahlecker asked to relieve the 16th Army in the Demyansk Pocket .
By that time German advance into Soviet Union halted and Nazi officials considered using the battalions for more direct military duties .
Franz Walter Stahlecker asked to relieve the 16th Army in the Demyansk Pocket .
By that time German advance into Soviet Union halted and Nazi officials considered using the battalions for more direct military duties .