On April 24, 1865, Corbett's regiment was sent to apprehend John Wilkes Booth, the assassin of President Abraham Lincoln, whom Booth fatally shot on April 14, 1865. On April 26, the regiment surrounded Booth and one of his accomplices, David Herold, in a tobacco barn on the Virginia farm of Richard Garrett. Herold surrendered, but Booth refused and cried out, "I will not be taken alive!". The barn was set on fire in an attempt to force him out into the open, but Booth remained inside. Corbett was positioned near a large crack in the barn wall.