From the publisher's website:

Includes four battles from the American War of 1812: Queenston Heights, Chippawa, Bladensburg and New Orleans. Each battle has it's own game board on card stock. The battle pack requires ownership of Napoleon's War Vol. I to play.

This Battle Pack uses the plastic miniatures from Napoleon's War Volume I: The 100 Days but provides custom game boards and battle rules for each of the four battles.