David, I did find information online stating the 1st Regiment Mississippi Militia was indeed there for the Battle of New Orleans. They are listed on some maps as reserves at the start of the battle. I would love to find information on the movements of the individual units during this battle though. I have no idea where to start except to go to the Battlefield itself and see what they have. The old NPS handbook (published mid 1950's) is available online and it states they have a lighted animated map of some sort showing the movements of the battle. If they had that back then it seems they would have something equal to or better now. Can you recommend any books or material that may help me understand what I'm seeking?
I was reading a book review at Amazon and the reviewer stated he learned that the Militia in the western states of Mississippi, Louisiana, Tennesse, and Kentucky as well as some from the lower area of Ohio were more capable of a fight than most folks give them credit for due to their actually having experience fighting Indians. Evidently they did more than "fire one round and run behind the regulars".