I've decided to join the army. I'll firstly go to Welbeck defence school if I get a place there. and then go on to train as an officer to the army. My question is once I'm in the army as an officer or training for it what other bigger places could I get to like SIS, MI5 and SAS? And when would those bigger roles recruit someone if they are good enough? Once I'm in the army as an officer, at Welbeck school or when I'm training to become an officer? Sorry if this is in the wrong section or anything I'm new here. Thanks.