Hi Gunnar!
The picture is clipped from an album and titled "1. Fokkertraining at Sandhofen" (thats near Mannheim) - should be January 1916.
I misread one name, though:
From the left are depicted: Wirth, Hauptmann (died), Arns, Mayer, Haggenmüller, Schnell and Ditzuleit, naval landplane flyers alltogether. There was another picture of the same bunch...
Regards
Hagrid