That AI T-34 on the rear slope of the hill on the left was firing at my Pak40 ATG on the right, and when my turn came up I tried to fire back from the Pak's viewpoint but the aiming crosshairs wouldn't lock onto the T-34 even though as I said the T-34 was able to fire at the gun!
Problem solved:- I had to rotate the viewpoint as below so that I got a clear view of the T-34 behind the hill and was then able to lock him up and fire..





