You are quite right on that matter. I have to return to freiburg next year and will give it a try to look also for some more information on the land units themselves. I have a few hundred photo's for the moment of the landbased men, but not their history. It will have to be done in a tight time squedual as I also have to go to Munchen for the Siemens archives. I would like to find out more on the Fernlenkboote, the Siemens R planes and the radio guided flying torpedo they did make.
For the moment all of my time went to my DIY shopand with the winter at the door I have some free time again to do some research, but that is for the moment especially on the Kagohl and Bogohl units, a story also as good as forgotten.