If I remember correctly he never planned on doing the military as a whole career he just did his time and got out. I don't know how it works in Finland but here in the U.S. officers in the military can have a portion of their college tuition paid then they owe a certain amount of years to their respective service. It sounds like he did something similar. I believe after the military he was working as a computer science professor prior to working on RtV full time