bump...
If I remember correctly the form (I485) only asked for the time interval of the military service and no additional documents. I have indicated that, since I was also required to spend 9 months of my life in my home country's army right before I came here.
My lawyer did not ask me to bring any records of it (yet).
However the thought, that I might run into problems later, has also crossed my mind. Especially because technically I am still a reserve officer of my home country (part of NATO now). This is an awkward situation as I could be activated anytime, which happens time to time for training purposes.
Anyone knows anything more about this?