Mission 9, and it’s the first one with a “war on two fronts”. As such, it was a bit confusing to start with, but in fact the second front (on the second screen) kind of takes care of itself for the most part. I just had to send up reinforcements every so often.
This mission took ages, but was pretty simple. I think I overdid it buying millions of missile launchers, when Neotanks were much more useful. Destroyed the “Black Crystal” to win.