[1] These were merchant seamen, including many British trawlermen taken prisoner after German raiders sank their ships in the North Sea, especially in the first days of the war.

The Catholic order of the Salvatorians, who were based in the still-standing Heilandsfrieden House, was disbanded and driven out of Sennelager by the Nazis in 1941; they were forbidden to settle anywhere in Westphalia or in the Rhineland.

On May 26, 1965, Queen Elizabeth II and Prince Philip visited "The British Army of the Rhine" at Sennelager camp.

There is also an industrial estate containing a NAAFI supermarket (only accessible to forces personnel and their families), car dealership and electrical goods dealer (SSVC).

In a play on old Carlsberg beer advertisements from the 1980s, many British soldiers use the phrase "Sennelager: probably the worst lager in the world" to refer to the training area.

Children of German families in the area generally go on to attend secondary school in Schloß Neuhaus or Paderborn itself.