KnowraSiege of PetersburgLinked fromLinked fromThe 7 pages that link to Siege of Petersburg, each with the reason it gives.All 7Broader topic 3Related 3Narrower topic 1Robert E. LeeBroader topic: Its eventual collapse forced Lee to abandon Richmond and retreat west.Army of Northern VirginiaRelated: The army’s defenses around Petersburg delayed Union capture of Richmond.Army of the PotomacBroader topic: The army’s trenches and assaults helped cut Richmond’s remaining supply lines.P. G. T. BeauregardBroader topic: Beauregard’s defense of Petersburg delayed Union forces before Lee arrived.Battle of the WildernessRelated: Grant’s continued advance after the Wilderness eventually brought the armies to Petersburg.Battle of Cold HarborRelated: After Cold Harbor, Grant shifted south and began operations against Petersburg.Battle of Appomattox Court HouseNarrower topic: The Union breakthrough at Petersburg forced Lee to abandon Richmond and begin retreating.