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2 day battle between Grant and Lee's forces that was fought in the woods/forest near Chancellorsville, Virginia where there was no clear winner. Lee's 2nd in command was killed by "friendly fire" (General Longstreet).
What is "Battle of the Wilderness" - May 5-7, 1864, Confederate Gen. Lee had to stop Union Gen. Grant from heading into Richmond, Virginia. Fought in a dense forest with many trees catching fire and soldiers could not see. Many were killed by "friendly fire", died from being shot, smoke inhalation and/or died from the fire.