I want to do some shuffling of corps and division commands, but several things are confusing. There seems to be no way to "replace" one leader with another. For example, to replace a division commander, it appears I have to disband the division and then re-form it with a new commander. This changes the unit name, etc. Awkward but not the end of the world. I tried to do the same thing with a corps recently, dismissing the corps and then reforming it under a new leader. The problem is that I cannot re-form the corps under the new leader. Examining the tooltip, I'm not quite sure why that is, but here are my ideas. This is the Eastern war scenario from Bloody Road South, and I'm trying to make Kearny the 3rd Corps commander.
1) No army in range. 3rd Corps is in York, PA and McClellan and Army Potomac are in DC, 3 regions away. When I click on McClellan and hold down shift, the blue command radius includes York, so I think this should not be the problem.
2) All armies are at corps capacity. Maybe this is the problem? I cannot tell as no further details are given, and it's not in the manual (frustration). Army of the Potomac starts the scenario with 6 corps, which seems like a lot. When I dismissed the previous leader, it was down to 5. Now it won't allow me to go back to 6 corps?