Medics

[aryaman]

Do they provide their bonus if kept at Army HQs or do they have to be in the same region attached to a corps?

[tc237]

The manual and the tooltip say "of the stack they are in".
So they have to be, as you said, attached which I take to mean part of the same tab.
A medic in the same stack as an Army HQ would only affect units in that HQ stack, not the entire Army.
You would have to put a medic in each Corps. I did and it was very effective, some of my divisions were getting cohesion recover rates of 1.40 per day.

[LAVA]

And...

don't forget you can also put divisions under the control of the Army commander, so the medic will apply to them.

Ray (aka LAVA)

[Rafiki]

You would have to put a medic in each Corps. I did and it was very effective, some of my divisions were getting cohesion recover rates of 1.40 per day.

Indeed. Having a medic attached to each of my corps is a "no-brainer" in my strategy book; starting with the main combat corps, and the spreading out to the less significant corps and forces if/when I get the number of medic units up.

[Gray_Lensman]

deleted

[Stonewall]

Only one bonus per stack. 1 medical unit is just as good as 25.

[Gray_Lensman]

deleted

[swang]

There is no such thing as "too many" medics...