The Battle of Fort Davidson, also known as the Battle of Pilot Knob, was a battle of Price's Raid fought on September 27, 1864, near Pilot Knob, Missouri. Confederate troops under the command of Major General Sterling Price had entered Missouri in September 1864 with hopes of challenging Union control of the state. On September 24, Price learned that Union troops held Pilot Knob. Two days later, he sent part of his command north to disrupt and then moved towards Pilot Knob with the rest of his army. The Confederate divisions of Major General James F. Fagan and Brigadier General John S. Marmaduke drove Union troops under Brigadier General Thomas Ewing Jr. and Major James Wilson from the lower Arcadia Valley into Fort Davidson on September 26 and on the morning of September 27.