Hi
@tobi! I am from Austria as well but only did my 9 month national service as an infantry soldier (MG1) in the 24 JgB in Lienz. I was in decent shape thanks to almost 12 years of Karate and 3 months of calisthenics and running before my service. But one thing that really kicked my butt at first were the loaded marches. Especially in the hills and in broken terrain your feet and legs really get worn out fast. So in addition to the standard fitness exercises it is probably a good idea to prepare for loaded marches in advance to get a bit of a head start.
Al Ciampi has already been recommended. Another forum member who has experience with training soldiers is
@mprevost. It seems he is not that active anymore but a lot of his posts and threads are really informative.
Another thing that might interest you is this study done by the US Navy that tested which fitness standards offered the highest probability for success during SEAL hell week:
SPEEDS, REPS, AND DISTANCES THAT CORRELATE TO HELL WEEK SUCCESS
Most important: Run (3-Mile and 4-Mile), Shuttle Run (300yd), Swim with fins (1000m)
Scroll down a bit to check out the SMART training goals.
Some of them: Body Weight Bench 10-14 Reps, Deadlift 1 Rep Max 1.75 x your bodyweight, 3-Mile/5km Run 18-19 Minutes, 300yd Shuttle Run 60 Seconds or less, Pull-up 19-21 Reps, 25lb/10kg Pull-up 13-15 Reps, Push-up 90-99 Reps
The Jagdkommando selection will probably be different than Navy SEALS selection. But these fitness standards look pretty much like what you expect from movies and documentaries about elite soldiers.