My first proper siege, buncha gobs and trolls, I left the magma canned up and let the military handle it.
The trail of bodies on the left hand side is from two martial trances between Urist McLegendary and his plat war hammer smashing heads in, and the newly christened Urist McTyson, Trollbiter, sending heads flying with his steel battle axe.
Why McTyson, Trollbiter?
...I can think of few things I'd like to go up against less than a dorf so crazy he grabbed a troll BY THE EAR with his MOUTH, shook it around until it tore off, lopped the damn trolls head off, then kept fighting for a while before casually spitting it out... SO HE COULD BITE SOMEONE ELSE IN THE LEG....
I really do love this McTyson psycho, was trying to collect the bodyparts and lay them out as a trophy hall, as is my habit, but I was having a heck of a time finding a couple of pieces...
That's the head of one of the gobs killed coming up the stairs to the left, on a roof two z levels up... with the arm of one of the trolls for company, and I think that's a leg by the statue to the right, all from my nutty axe lord.
To celebrate I set up a big experiment I wanted to try... it was impressive, but it's hard to keep the game going because it just kinda looks at me, tosses it's hands up in the air and leaves.
Instead of using a piston to raise magma up into a catchment (as in the piston to the right of the volcano) I used liquids to make a block of obsidian 25x22x15 at ground level, flattened everything around it to get it to flow the right way, dug out the cistern beneath it... and then wait for a second, giggle madly... and then make the poor choice to try to fire up the magma pumps and drop the other three pistons... it worked and I had just about the entire map flooded, but when I tried to take a screenshot it threw a segfault at me and fell over.
Edit: BY THE BLOOD OF ARMOK, I just realized that in the combat log with the "shakes the troll by the left ear and the severed part flies off in an arc", the severed part
is the rest of the troll...