Got ambushed by goblins, didn't have any military worth mentioning, ordered everyone inside and battened down the hatches. So the goblins spend a couple of months outside in the cold and rain. Then a dragon, of all things, shows up! Goblins charge it, dragon charges back, 3 breaths later, deep fried goblin! Dragon took some hits from the bolts though.
Again, couple of months later, zombie siege! Now THAT was amazing to watch! Of course all the zombies charge the dragon from all sides (they spawned all over the edges of the map), dragon keeps running around willy-nilly breathing fire on everything. I look up at the unit list for the necromancers, find 2, zoom to them, both are in pools of water! O.o I did not know the game was that smart. I keep observing the necromancers, sure enough, they keep darting from water to water only, resurrecting anything they see. Meanwhile, the zombies trigger another ambush. So now there is a GOD DAMN three-way as all the parties are hostile to each other. I break out the popcorn. Goblins put on a good fight, but get overpowered. Meanwhile the dragon eventually catches both necromancers (serpent men) out in the opening, and once the source is gone, the rest of the zombies get cooked. Dragon did take a beating though. Plus all his fat is gone from every body part. I'm guessing it melted in its own firebreath heat. (DAMN I love this game).
Dragon chills around for another 6 months, I get a migrant wave. Because there is no entry into my fort, due to the mother f-ing dragon, they just stand on the edge, while the dragon rushes in. One migrant manages to get a bolt off before all the migrants are roasted. The dragon has trouble breathing! I hope it suffocates. That would make it SO awesome, all my problems would've solved themselves.
All the gray areas are ashes due to dragons fire breathing.

Initial dragon-goblin combat site. Corpses are either burned up or resurrected, no clue.

Dragon vs zombies site.

Goblins vs zombies. Some of the zombies were goblins to begin with, the zombies left over from this fight went back to the dragon.

One of the serpent-man necromancer corpses and his fallen minions. The Dragon did not have much patience.

Freshly obliterated migrants, and the star of the show. CHOKE YOU BASTARD!