80, Union 40. Butler was furious with Gillmore's timidity and incompetence and arrested him. Gillmore requested a court of inquiry, which was never convened, but Grant later reassigned him and the incident was dropped. On June 14–17, Grant and the Army of the Potomac slipped away from Lee and crossed the James River. They began moving towards Petersburg to support and renew Butler's assaults. The Second Battle of Petersburg and the Siege of Petersburg would soon follow. Notes References Davis, William C., and the Editors of Time-Life Books. Death in the Trenches: Grant at Petersburg. Alexandria, VA: Time-Life Books, 1986. . Kennedy, Frances H., ed. The Civil War Battlefield Guide. 2nd ed. Boston: Houghton Mifflin Co., 1998. . Robertson, William Glenn. The First Battle for Petersburg: The Attack and Defense of the Cockade City, June 9, 1864, rev. 150th Anniversary ed. El Dorado Hills, CA: Savas Beatie, 2015. . Salmon, John S. The Official Virginia Civil War Battlefield Guide. Mechanicsburg, PA: Stackpole Books, 2001. . National Park Service battle description CWSAC Report Update Further reading Chick, Sean Michael. The Battle of Petersburg, June 15–18, 1864. Lincoln: Potomac Books, an imprint of the University of Nebraska Press, 2015. . Petersburg I Petersburg I Petersburg I Petersburg I Petersburg Petersburg 1864 in Virginia June 1864 events