They were in a house which is why I said I just stumbled upon it. The tank, well he sat there an entire turn and my infantry just watched him, and then the tank drove away advancing past them and into the back of my Ktiger with a gunner doing the 'aiming, spotting, aiming, spotting, aiming, spotting' routine. So in my next turn I will bonzai my infantry out of the buildings into the open roadway to chase the tank and maybe then they will fire at him.