We wanted to do something a little different with the kids one day, so we ventured forth to Naper Settlement, a whole city block or so that continues to live in the 1800's. When I've been there before, we visited the blaksmith shop, the livery, the mercantile, the school, some homesteads, etc. But this time we hit on a weekend celebration that involved a Civil War re-enactment, and the kids were intrigued.
This is the Union Army Fort, with the soldiers preparing for battle.

Starting the battle off with some cannon fire. VERY LOUD! (We were also standing within 50 feet of some of the cannons.)

The soldiers lined up on the battlefield, facing the their Confederate enemies. The Confederates were lined up very similarly maybe 100 feet away.