The brothers escaped and were detained near the Danish border where they hid on a farm for two months until the end of the war.
His objective: to defend the Danish border against a much greater combined Prusso-Austrian army.
The German Wehrmacht crossed the Danish border around 05:15 on 9 April.
After 12 days on the run Bruce and Hunter were captured near Flensburg, within a few hundred yards of the Danish border.
However, German troops crossed over the Danish border and returning to London was impossible.
He then began a rural medical practice based in Eddelak, a small German town near the Danish border.
His conquests across the Danish borders were apparently short-lived.
North: Westerland (on the island of Sylt at the Danish border)
Flensburg's city centre lies about 7 km from the Danish border.
He was arrested in August at the Danish border and put into the Stockholm jail.