Slitherine

Anyone have any advice for a winning strategy on the first scenario in the second campaign (I think it's called incursion). I can't seem to find a way to win, even on Normal.

Have you tried focusing your troops and capturing one objective at a time to gain the reinforcements?

Yes. I've run the troops from bottom of the map around the outside to join those at the top, while sending an flying unit to capture the first base. I've even managed to capture the second base without too much trouble,but then the other side gets reinforcements as well. Once they mass, which they have plenty of time to do, I just don't have the firepower to beat them.

This is the only scenario which has given me difficulty.