Jean-Andoche Junot, Duke of Abrantes, I guess.

He was a commrade of Napoleon since the battle of Toulon in 1793. He seemed to be a skilled commander and a hard occupier. You will find a lot of links in Google. However, I know nothing about this fight.

He was wounded twice at his head and he went insane and did suicide.

Links:
http://en.wikipedia.org/wiki/Jean-Andoche_Junot
http://www.bnbt.de/~tr1035/bt/wer/index.htm