Forests and Leaders

[Jagger]

I just lost a brigade leader to rifle fire.  I had him enter the line to raise the morale of a disrupted regiment.  Unfortunately, even with only a 5% chance I would lose him, he was killed.  However I don't see a replacement leader.  Will the senior regimental commander replace him as brigade commander?  If the game doesn't produce replacement leaders, you won't see me put a commander into the front line again.

If he had been wounded instead of killed, would the leader still be in command? 

The parameter file doesn't seem to differentiate between mounted and foot officers in terms of vulnerability.  Does it matter whether the commander was mounted or on foot when it comes to leader loss?  My leader was mounted.

Also is it my imagination or is the cost of forest movement variable?  I am in a PBEM game of Chickamauga with lots of forest.  Several times, units have not moved the distance I expected.  So is there some random possibility of increased forest movement costs to be greater than 5MP as listed in the data parameter file?