The captured portion of the regiment was eventually exchanged and released on the east side of the Mississippi and served the remainder of the war with the Confederate Army of Tennessee.

The un-captured portion of the regiment was consolidated with the remnants of the 24th Arkansas and served the remainder of the war in the Department of the Trans-Mississippi.

Several Companies contained officers and men who had previously served in the 5th Regiment, Arkansas State Troops, which had disbanded rather than enter Confederate service following the Battle of Wilson's Creek.

The company officers were mostly men who had been active in the prewar militia, and many were veterans of the Arkansas State Troops and had seen combat close up and personal at the Battle of Wilson's Creek.

The privates of the regiment were also a pretty literate bunch of men who wrote home frequently, providing many insights to modern researchers.

[10] Still unsupplied with sufficient arms, the 19th Arkansas was present, but not engaged, at the Battle of Pea Ridge, where it was detailed to guard the army's train.

After the battle, the 19th Arkansas was stationed on the border for a few months, and was ordered to conduct a long, difficult and pointless march through the Indian Territory.

Many of the new recruits died of disease before they were mustered into service, and were buried in untold numbers of unmarked graves at White Sulphur Springs.

The men who were captured were sent to prisons in the North, and when exchanged in April were assigned to the Army of Tennessee, where they spent the rest of the war.

At Chickamauga, the unit fought in a brigade made up entirely of the Arkansas Post prisoners, and commanded by General James Deshler who was killed during the battle.

The ten companies of the 19th were then reorganized by combining them into five as follows:[12] Colonel George Baucum of the 8th Arkansas assumed command of the consolidate unit.

[11] The 8th-19th played a part in all of Cleburne's actions in the Atlanta Campaign, but particularly distinguished itself at the Battle of Pickett's Mill, when it was sent across a cornfield to counter a Union thrust which was about to turn the Confederate right flank.

Cavalry General John Kelly, a former commander of the 8th Arkansas, appeared before the men, and in an electrifying charge, led them into the corn to stop the Union attack cold.

The flag of the consolidated 8th-19th was captured by Medal of Honor winner, 2nd LT Jeremiah Kuder of the 74th Indiana Infantry Regiment during this fight.

[11] The 18th/24th lost thirty-eight percent of the 226 engaged at Chickamauga, and the 8th/19th reported 16 casualties at Ringgold Gap and totaled 363 men and 285 arms in December 1863.

The honor of crossed cannon, as well as the unit's position on the battle field in support of Key's Battery, caused the confused attribution.