For background, large War Room maps were created using outlines of existing continents, all jumbled up and redrawn, but still vaguely familiar. As it turned out, virtually all of the map footage ended up on the cutting room floor.
Eagle-eyed observers may notice that Taft (the officer at the extreme right) isn't wearing a shirt. His costume--a modified steampunk trenchcoat--was a size too small, so he cheated his bare chest away from the camera as much as possible.