Confederate Gen. Robert E. Lee's Army of Northern Virginia faced Union Lt. Gen. Ulysses S. Grant's Army of the Potomac across the North Anna River from 23-26 May 1864. Union troops moved south across the river near here at the Chesterfield Bridge, on Lee's right flank. Federals also crossed the river about four miles west at Jericho Mill, on Lee's left flank. Lee repulsed Union attacks at the center of his line at Ox Ford. Grant, determining that Lee's position was impregnable, withdrew on the night of 26-27 May and moved his army around the Confederates to the east. Each army sustained about 2,000 casualties at the Battle of North Anna.