Thanks for all the replies. Btw, I did search the forum, but found nothing.
I did not acquire the target by CC. How do you do this? Maybe this is what I needed to do.
I did attack from the side. The tank was engaging a machine gun emplacement.
I tried various commands at the waypoint: facing, target, target arc, and target armor.
I tried pausing at the waypoint.
The only time it worked was when I moved into the open, not at the corner of the building, and did not move away (ie no waypoint). If I move away after the waypoint, they just sit the, and then move away after the pause.
What I would like if to 1) move to the corner, not other open, and/or 2) fire from the waypoint, not end the turn in the open.
Thanks again!