"[3] On October 12, 1861, Fiser was appointed the assistant adjutant general of his regiment,[6] and during the reorganization of the Army of Northern Virginia early the following year he was elected lieutenant colonel of the 17th Mississippi as of April 26, 1862.

[7] The 17th's attack that day has been described as: At Malvern Hill, 1 July 1862, about six in the evening, they made a desperate charge upon the Federal line, under a terrible fire of shell, grape, canister and Minié balls, but without success.

On November 29 Fiser was hit in his right arm as he reached the top of the Union defensive position during the Battle of Fort Sanders, a wound requiring the amputation of the limb.

[11] An account of his actions in the attack follows: Fiser has a hatchet buckled onto his sword belt, and he vowed to cut down the tall flagstaff on top of the enemy fort.

He climbed to the top of the parapet during the heat of battle, and was making for the flagstaff when a ball shattered his arm, and rolling him back into the ditch.

On February 26, 1864, he was promoted to the rank of colonel, but the wound was slow to heal and he resigned his commission on June 12 and returned home.

In 1865 Fiser was given command of a brigade of reservists from Georgia, part of the scattered forces that opposed the Union soldiers of Maj. Gen. William T. Sherman during the Carolinas Campaign.

Fiser died of dysentery in 1876, and his remains were buried in the Chapel Hill section of the Elmwood Cemetery located in Memphis.