If the American Army suddenly needed an Army or Corps commander who do you think would get tapped and why? The reason why they need one is secondary. It could be a road accident, severe illness (i.e.heart attack) or a lucky German bomb or shell. But let's say on January 6 there is need for an Army commander followed by a Corps commander a couple days later (or the other way around). There are two critical openings to fill. Who gets called?