Hey friends! I just wanted to say that your posts on spies have been so useful to me. Anyway, I have a character who is an ex-soldier (infantry). For various plot reasons, he needs to infiltrate a very secretive group and gain info on them. He has a mentor, who is an intel agent. Question is: what would a crash course on infiltration look like? They don't have much time, and my solider is a very straightforward person and has some problems with deception. What does he need to know?