The Battle of Fort Davidson, also known as the Battle of Pilot Knob, was the opening engagement of Price's Missouri Raid during the American Civil War. This engagement occurred on September 27, 1864, just outside of Pilot Knob in Iron County, Missouri. Although outnumbered by more than ten-to-one, the Union defenders managed to repulse repeated Confederate assaults on their works, and were able to slip away during the night by exploiting a gap in the Southern siege lines.