KMAR = Koninklijke Marechaussee
Google translates this in Royal Military Police but they do a lot more like border protection, airport security,
protection of military installations.
https://en.wikipedia.org/wiki/Royal_Marechaussee
The Koninklijke Marechaussee, the Royal Netherlands Marechaussee, abbreviated to KMar, is one of the four Services of the armed forces of the Netherlands. It is a gendarmerie force performing military police and civil police duties.
This liner is made in 1972 by Schubert Werke
more pictures at KMAR part 2
I also have in my collection a beret worn by the KMAR in the seventies:
Beret Koninklijke Marechaussee
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