Anybody who has seen documentaries or illustrated histories of the Civil War has to have remarked on the facial hair that generals sported during the war. I don't know how Ambrose Burnside had the time to cultivate his strange chops, although the maintenance required might explain the shoddy work by him at Fredericksburg and Petersburg.
So, what is everyone's favorite beard or moustache from the Civil War. Besides Ambrose's, I have to say that W.T. Sherman was astute in coming up with the Miami Vice stubble beard 120 years before the show, JEB Stuart could have been a department store Santa, and PGT Beauregard must have been a musician because of his soul patch.