Battle of Cold Harbor Part of the American Civil War Battle of Cold Harbor by Kurz and Allison, 1888 Date May 31 ( 1864-05-31 ) – June 12, 1864 ( 1864-06-13 ) Location Hanover County, near Mechanicsville, Virginia 37°35′24″N 77°17′06″W / 37.59°N 77.285°W / 37.59; -77.285 Coordinates: 37°35′24″N 77°17′06″W / 37.59°N 77.285°W / 37.59; -77.285 Result Confederate victory [1] Belligerents United States (Union) CSA (Confederacy) Commanders and leaders Ulysses S. Grant George G. Meade Robert E. Lee Units involved Army of the Potomac [2] XVIII Corps [3] (Army of the James) Army of Northern Virginia Strength 108–117,000 [4] 59–62,000 [4] Casualties and losses 12,738 total 1,845 killed 9,077 wounded 1,816 captured/missing [5] [6] 5,287 total 788 killed 3,376 wounded 1,123 captured/missing [6] v t e Overland Campaign Wilderness Spotsylvania Court House Yellow Tavern Meadow Br...