Nachtigall Battalion
In October 1941, one for each of the Turkestan and Caucasian prisoners of war (the operation of the Abwehr "Tiger B") was created for the special purposes of Abwehr and controlled by the Stab Walli (in June of 1941, it consisted of 21 Abwehr commandos, at least 70 Abwehrgroups and many sabotage-intelligence schools) and subordinated to the two officers of the Abwehr, Major Andreas Meier Mader and Theodor Oberländer. Professor Oberleutnant Oberländer was the Head of the Department of Social Sciences department in Königsberg, Greifswald and Prague before the war. Oberleutnant Oberländer was also the political leader of the Nachtigall Battalion.