Well, not so much firepower as history. Sure, we're off track a bit, but you're learning something!
In keeping with the "Lesser Known Parts of World War II" theme, let's have a look at Romania during World War II.
If it isn't obvious to you from the pictures, Romania fought on the side of the Axis for most of the war, switching sides in August 1944. Wikipedia has a pretty decent article on the subject, and for more pictures and multimedia, there's www.worldwar2.ro.