ah grasshopper,I could tell you but to experience it would be all the better... I can hook ya up if you would like to give it a try.
but in all seriousness we do 2 types of battle senarios... scripted and tacticals.Scripted battles are what the public sees.They sit all the commanders down and go over what parts of a certain battle we will be doing. The order of battle,casualty counts and when they need to be lite or heavy, and your objectives. Then that info filters down through a chain of command till it gets to the boots on the ground. At Ft.Fisher,we were portraying a New York regiment that assualted near the sally port at what is known as Shepards Battery. There were 3 brigades of us federals who assualted the fort.One brigade through the sally port guarded by a company of confederates and a 12 pound cannon.Us at Sheppards Battery where they have a 32 pounder stationed,firing heavy I must say, and another company of confederates ,and lastly the third brigade of infantry with a detatchment of navy and marines mixed in.They went in against 2 companys of Confederates. We had roughly 400 to 500 federals against a couple of hundred confederates.Now when the battle took place in 1865,Ft.Fisher was defended by 1400 troops but the federal assualt was nearly 10,000 men not to mention the 60 ships of the line firing artillery in before and during the assualt. Only once have I done a battle scenario that was 1 to 1 scale and that was Gettysburg in 1998 and we had roughly 27,000 reenactors there.
So yes we try to do the scenarios as best we can to what went on. We are told when we need to take hits and if we need lite or heavy casualties. Sometimes you will take hits and then a little while later rejoin the fight so you can keep the numbers up to have the appearance of more troops for the spectators.Sometimes you just get plan tired and need a break so you take a hit.
Some units concentrate on looking good in the field with their drill and being able to manuvor troops in the field same as they did back then. Other units worry more that the stitch count is correct on the jacket than the drill.I have no use for stitch counters.
Tactical scenarios are pretty much for us. Get up,form up, and do a cat and mouse hunt through the woods till you slam into your opponents and then use the tactics of the times to "one up" the enemy.Guess it would be like a paint ball fight but with a military structure and Napoleanic tactics.