Seems like there would never be any reason to attack yourself in Stratego.. unless you do screw up the placement of your pieces like a noob. So I ask, can you attack yourself? Of course, it doesn't say so in the rules, probably because they hope no one is stupid enough to need to. I'd like an answer with some kind of reference or "proof".
No. From p. 4 of these rules:
And from p. 5
You can only attack your opponent's pieces, and your own pieces cannot share a square in any way.