https://www.brettschulte.net/CWBlog/regimental-level-orders-of-battle/regimental-level-orders-of-battle-perryville-oob/
Regimental Level Orders of Battle: Perryville OOB
orders of battleregimentallevelperryvilleoob
https://www.odgw.com/forums/forum/168-orders-of-battle/
Orders of Battle - Old Dominion GameWorks
orders of battleold dominion
https://maps.plan-ops.fr/Orbats
Orders of battle - PLANOPS Maps
orders of battlemaps