Thankfully the Netherlands has a large selection of archives and museums. Try this site first: https://www.openarch.nl/ I have had luck with finding people through there before.
If nothing comes up you could also try here http://www.archieven.nl/en/
and in the Dutch National Archives: https://www.nationaalarchief.nl/en
Best of luck!
Dear Mr. Rooze,
Thank you for posting your request on History Hub!
We suggest that you contact the Netherlands Institute for Military History (NIMH) by email at email@example.com or contact the Netherlands Ministry of Defense via their contact form at https://www.rijksoverheid.nl/contact/contactformulier.
We hope this is helpful. Best of luck with your research!