@Walter Hinteler,
This report by reuters sums up the situation on Saturday morning.
While waiting to get my rolls,I talked to an aquaintance.
He's British, lives here since decades, and works as a senior manager at
Guy's & St Thomas (Germany)Ltd. (That a German health insurance company just and only for British civilians working at The British Forces here as well as for relatives of active servicemen not covered under the Nato statute. [The British Army doesn't have military hospitals here but uses German hospitals instead.)
Well, there had been plans to open this health insurer for all,since when the last garrison will be closed in 2019, there won't be many to get insured.
He didn't have an idea what will and could be done. But he applied for German citizenship yesterday.