Charles Hackney was born in Knoxville.
He volunteered his services for the war at Knoxville in May 1917 and was assigned to Company M, 9th Infantry, 2nd Division. His organization sailed for overseas duty in November 1917. He was killed in action June 2, 1918, in the American defense of the Chateau-Thierry sector in the Marne salient. He died at the age of 29 and is interred at A,11,79, Aisne-Marne American Cemetery, Belleau, France.