Most of the activity was outside the frequencies allocated for most countries as the region-1 60m allocation. We dutch radioamateurs are still lucky to be allowed outside these frequencies and so it was possible to work these militairy style stations again.
I found a interesting report from a participating air cadet station of last year, nice read:
Another interesting page is the wiki page:
There are also dutch air cadets, but will they ever organise a radio excersise?