I have the german version, so I don't know what the english name for the close combat equivalent of "Overwatch" is, I call it "Battle Stance".

The question: Do I interpret the rules right, that I can spend 2 AP to let a Terminator take "Battle Stance", and then run around beating up Genestealers, all the while not losing the "Battle Stance" status until end of turn?
Or is it purely passive and only has effect in the Genestealer turn?

Thanks for the patience.