The first stage is an interview composed of 3-5 questions and cognitive games. The questions pertain to your motivations and the specific section you've applied for. It is on hirevue an you get approx 1 week to complete it
I applied online. I interviewed at NATO (Brunssum)
Interview
I submitted an application which included a CV and a motivation letter. The internship was available only for active students. There was no interview or testing involved, just the application process.
First I got invited to the game based assessment. After a few weeks I received an invitation to sit a pre recorder video interview for all of three divisions I applied for.