On July 3, 1863, two brigades of Union cavalry led by Gen. David M. Gregg were sent east of Gettysburg along the Hanover road in an effort to cover Meade’s right flank. Vitally important to this mission was the protection of the Union Army’s supply line along the Baltimore Pike. Joining Gregg was a brigade led by BG George A. Custer. The ensuing fight featured a clash between these Union cavalrymen and the Confederate horsemen under Gen. Jeb Stuart, the reasons and results of which are still debated today. We will exam the action by discussing the ground, the road network, the command structure and decisions made during this fateful attack. Meet in the parking lot of St. Marks Church at the corner of the Baltimore Pike and White Church Rd. From there we will travel out to East Cav Field.