The Battle of Glendale was the fifth of the Seven Days' battles, and Robert E. Lee's best chance to defeat the Army of the Potomac during it's "change of base" to the James River. Lee launched violent attacks against an isolated portion of McClellan's army, briefly breaking the Federal line. Swift Union reinforcements stemmed the tide and fought the Confederates to a standstill. That night, the Yankees slipped away to another defensive position on Malvern Hill.
Prior to 1987, only two small parcels of the Glendale battlefield had been preserved, consisting mainly of the Glendale National Cemetery. The Civil War Trust and its partners have worked closely with local landowners to reclaim this crucial battlefield piece by piece. According to historian Robert E. L. Krick the Glendale battlefield is now "a preservation gem," with 619 acres saved.