Brockman became Colonel of the 13th Regiment after Col. O. E. Edwards was killed. Benjamin led the 13th from 1863 at the Battle of Chancellorsville and lost an arm in a near Spotsylvania Court House, May 12, 1864. He died one month later in a Richmond hospital from complications of this wound. Jesse was also injured in the charge and lay three days on the battlefield. He died of his wounds in the hospital on May 28, 1864.