A few years ago, Marty and I did the team tournament at Adepticon, using the Wretched Alliance of Appomattox as the theme.
His Iron Brigade 'Union' Dwarves had to ally themselves with my 'Confederate' Chaos Dwarfs.
I converted all sorts of miniatures for the army, including a scratch built vehicle. These Bull Centaurs were chief among the conversions. You can find a few articles on the construction here:
I have other articles on the Deathshrieker:
An article on the Dwarf unit:
I tried to match the way that Marty had sculpted and painted his Iron Brigade, which was a very unique project to say the least!
We had a TON of fun building the display board.
And yes, we dressed the part!!!