At first, I was fascinated by the metal tone chosen for the suits - I always pictured the Southers and Northers to be wearing some chemical-repelling synthetics, not metal. Great work, and a rather convincing, though not overwrought, non-metal-metal.

Very comic-book-style, and very much to my liking.
Then, I decided I'll have to re-evaluate my Souther painting scheme after this (although I'll probably go for a green metallic).
Then I noticed those faces.

Outstanding.