House Rules and Optional Rules

[Jagger]

I was digging through some of my old games and found the Eckmuhl campaign.  I played it years ago a against the AI but never PBEM.  Anyway, I was thinking about giving it another go and trying PBEM this time.  I am going to take a week or two to relearn the rules and do a couple games against the AI.  Then on to PBEM.

I am curious whether there are any standard house rules in playing PBEMs-particular for Eckmuhl or the Napoleonic games.  Also I am wondering what are the usual optional rules used for PBEMs.  I will play my practice games with the recommended optional rules and bare in mind any house rules.

Thanks all!