You can lock units so they won't combine if you drop them on top of one another. Just right click on a units tab to lock/unlock a particular unit. Or
you can press Crtl+L to lock/unlock all units. That way you can drop them in the same area without combining them.

I'm not sure what you're seeing with the Union armies, but you should lose the corps when you add them to an army stack; they become part of the army stack.

Look forward to Mickey3D's reaction to this situation. Question is
whether Mickey3D can hang on for a VP victory.

I do wonder (way back to your first post), why you went to the trouble to build Mid-West cav to blow up your own level 1 depots North of the Ohio (that and the move to NYC seems a bit skittish really). Gray Fox didn't want to waste resources guarding every depot. Those depots he didn't defend were ...

The requirements can be found here: http://www.ageod.net/aacwwiki/Fort#Building_a_fort

Forts Jefferson and Zachary are only 4 days further than Pickens
if you're thinking in terms of resupply.

And, I don't think that the need for balance is any different than 1.15 and before, but I could be wrong.

In 1.16, I've been able to get the percentage as high as 75, so it works
for me.

I haven't had a problem with the blockade box %.
Are you balancing between the Atlantic and Gulf
boxes?

Take a look at Clovis' Struggle for a Vast Future mod and
see if that is what you are looking for.

On this day 150 years ago Beauregard asked for the surrender of Sumter.
Cannot say what happened on this day in 1886.

I have had success neutralizing Semmes by sending a fleet
of heavy warships, including all available armored frigates,
to the shipping box. That way the transports aren't such
easy prey.