David Clendenin served as first lieutenant of Capt. James Hazlep’s company of artillery attached to a regiment of the Ohio Militia in the War of 1812 and also as lieutenant paymaster in the Second Regiment, Ohio Militia, from August 26, 1812 – January 19, 1813. He was assistant district paymaster in the United States Army, April 19, 1814 – December 19, 1814 at which time he was mustered out.
