In each battle there is a Chain of Command for each side.
At the top of the Chain of Command is the Commander in Chief
(Cic). Each side must have a Cic, no matter what his rank is.
He is usually the most superior officer (but not always).
For example, in most large battles he will be
an Army Commander (4 stars). The rank of a commander is independent
of whether they are the Cic or not. For example, if you play
Pickett's Charge, Hancock, the 2nd Corps Commander, is the
Cic purely for game play. Because he is Cic, the orders come
down from him to Newton, the Corps Commander of 1st Corps.
However, this is historically not correct
but for game play it makes sense to organize the units this
Under the Cic are the other subordinate
commanders. The chain of command flows from the Cic, to subordinate
commanders, to their subordinate commander, etc., until the
chain of command reaches the brigades.
Brigades and batteries are usually under the control of a Divisional
commander. However, sometimes independent brigades may be under
the direct control of a Corps commander, and sometimes even an army
commander. This is very important when considering who a brigade
or battery is receiving its orders from (see command distance).
Sometime throughout the course of a battle a Commander may be killed
or wounded. The commander does not have to be physically involved
in a fight but merely within 3 hexes of any fighting. There is a
small chance they will be a casualty (due to flying shrapnel or
sharpshooters). If they do become a casualty, it takes one turn
for a replacement to be appointed.
During this time the command distance of the commander unit is
reduced to zero (see command distance).
If the commander who was killed was an Exceptional commander, the
replacement will not be exceptional.