Jakob, short reply to avoid hijacking this thread, send me a PM if you have more specific questions.

Army aviator, flew VIP and General Support out of Stuttgart in C-12U (B200) and C-12J (B1900C). Mostly to Bosnia and Kosovo from Germany or Italy, but during my first three year tour I landed in 21 different countries as far east as Tiblisi Georgia, north as Oslo, South as Ali Al Salam Kuwait, and west as the Azores. I'm now flying an RC-12K out of Wiesbaden AAF and it is no where near as fun. Photos of all aircraft are on airliners.net if you are curious.

IFR in Europe is very easy once you get an ear for the different accents and become familiar with procedures at airfields you go in and out of regularly. In less busy sectors it is fairly easy to get "Direct to XYZ" for short cuts, but usually never further than the international border. Only serious problem I've had over here is Podgoriza Montenegro Radar not wanting to let us deviate around an area of thunderstorms and they flew us into the middle of a horseshoe shaped ring of thunderstorms. We worked it out, kept the plane out of the weather, and they eventually let us fly up the Adriatic Sea rather that heading back towards Sarajevo like our flight plan was filed for. Frankfurt is very busy and they want to cancel us army pilots out and put us visual to Wiesbaden as soon as possible. I went into FRA once with my CP's mic button sticking and hot micing on the arrival freq during the evening rush. Had an engine failure over the north sea and made an emergency landing into Koln. I recommend flying over the alps and dropping down to FL180 when it is clear outside, great view. And if Dutch Mil F-16's intercept you and ask to be cleared in close, they mean Blue Angel close.

Happy flying!