The Bolivar Heights Battlefield in Jefferson County, West Virginia, partly in the town of Bolivar, is an American Civil War battlefield which, – because of its strategic position overlooking Harpers Ferry, where the U.S. had an armory, and its placement at the head of the Shenandoah Valley – was the site of five separate engagements between Union and Confederate forces: in October 1861, May and September 1862, June 1863, and July 1864. Wikipedia