British cartographer William Faden is well known for his maps depicting major battles of the Revolutionary War. Unusually, he produced two maps of the Battle of Brandywine, one in 1778 and the other in 1784. Each map shows troop movements and positions along with other aspects of the overall battlefield landscape, but each conveys significantly different information.  Andrew Outten, historical programs manager for the American Revolution Institute of the Society of the Cincinnati, will discuss the Battle of Brandywine, key differences between the two maps, and recent discoveries pertaining to those differences.