2021, the Trust and its partners have acquired and preserved a total of of the battlefield in four acquisitions since 2012. See also Troop engagements of the American Civil War, 1864 List of costliest American Civil War land battles Armies in the American Civil War Notes References Cullen, Joseph P. "Detour on the Road to Richmond." In Battle Chronicles of the Civil War: 1864, edited by James M. McPherson. Connecticut: Grey Castle Press, 1989. . First published in 1989 by McMillan. Eicher, David J. The Longest Night: A Military History of the Civil War. New York: Simon & Schuster, 2001. . Esposito, Vincent J. West Point Atlas of American Wars. New York: Frederick A. Praeger, 1959. . The collection of maps (without explanatory text) is available online at the West Point website. Freeman, Douglas S. R. E. Lee, A Biography. 4 vols. New York: Charles Scribner's Sons, 1934–35. . Grant, Ulysses S. Personal Memoirs of U. S. Grant. 2 vols. Charles L. Webster & Company, 1885–86. . Grimsley, Mark. And Keep Moving On: The Virginia Campaign, May–June 1864. Lincoln: University of Nebraska Press, 2002. . Hattaway, Herman, and Archer Jones. How the North Won: A Military History of the Civil War. Urbana: University of Illinois Press, 1983. . Jaynes, Gregory, and the Editors of Time-Life Books. The Killing Ground: Wilderness to Cold Harbor. Alexandria, VA: Time-Life Books, 1986. . Kennedy, Frances H., ed. The Civil War Battlefield Guide. 2nd ed. Boston: Houghton Mifflin Co., 1998. . Luebke, Peter. "Battle of North Anna." In Encyclopedia Virginia, edited by Brendan Wolfe. Virginia Foundation for the Humanities. Accessed September 15, 2010. Rhea, Gordon C. To the North Anna River: Grant and Lee, May 13–25, 1864. Baton Rouge: Louisiana State University Press, 2000. . Salmon, John S. The Official Virginia Civil War Battlefield Guide. Mechanicsburg, PA: Stackpole Books, 2001. . Trudeau, Noah Andre. Bloody Roads South: The Wilderness to Cold Harbor, May–June 1864. Boston: Little, Brown & Co., 1989. . U.S. War Department, The War of the Rebellion: a Compilation of the Official Records of the Union and Confederate Armies. Washington, DC: U.S. Government Printing Office, 1880–1901. Welcher, Frank J. The Union Army, 1861–1865 Organization and Operations. Vol. 1, The Eastern Theater. Bloomington: Indiana University Press, 1989. . Young, Alfred C., III. Lee's Army during the Overland Campaign: A Numerical Study. Baton Rouge: Louisiana State University Press, 2013. . National Park Service battle description