Back in warbirds, they had AI formations of D3A that flew around bombing fields and I remember seeing guys go after them.
It was a hoot to join the formation in your own D3A and wait for someone to come along to blast the defenseless planes out of the sky.
When he shows up, you slowly break off and circle around behind him or simply throttle back while he's busy shooting fish in a barrel.
Manning the guns on AI bombers was also fun in warbirds.