Mednafen on Windows with TG16-Mini USB Controller. Playing as the Axis (green). The strat here is to keep your Eagle away from the Seeker while trapping them in a pincer move from the northwest and southeast. Your Charlie is the decoy, attracting their attention in the center of the map while meanwhile the walls keep closing in on them.

Time saves might be possible through better destroying all their troops in fewer than eight turns, but I don't think trying to capture their base would be advisable given the lack of transportation for your Charlie and Kilroy.