Does going through BMOQ help improve your fitness level?

I was in the process of applying for the army reserve and I was curious about the amount of physical training you do during courses, especially BMOQ-A and DP1, since those are ~3 months long each. I consider myself of average fitness for my age (28). I can run 5km in a bit under 30 minutes and I can probably do like 15 push up in a row. I was hoping that getting in better shape might be a fringe benefit of enrolling. Is it realistic to expect my fitness level to improve as a result of going through initial training courses?