Lots of interviews to complete. Test you on a range of different areas. Begins with a normal interview followed by a psychological interview. If you're successful with that, you'll be invited to do an OSB. (officer selection board) This is quite challenging, takes a while to complete (varies with the person but around an hour) Here you get tested on impromptu scenarios. Like you'll get a couple minutes to prepare for a random topic they pick. They ask you a lot of questions about the army and how much you know about your job.