On December 9, 1864, Captain William Cary Myers became commander of the Battery and was with the unit until it mustered out of service in August 1865.

The battery was attached to 1st Brigade, 4th Division, Army of the Tennessee, to April 1862.

District of Corinth, Mississippi, 2nd Division, XVI Corps, to January 1864.

The unit marched to Jackson, Tennessee, and was on duty there until June 2, 1863, then moved to Corinth, Mississippi, and was there until November 2, 1863.

Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church, and Allatoona Hills May 25 – June 5.

Moved to Huntsville, Alabama, then to Eastport, Miss, and duty there until February 6.

[2] At the Battle of Atlanta on 22 July 1864, the 14th Ohio Battery was armed with six 3-inch Ordnance rifles.

Colonel John Morrill's brigade of Brigadier General John W. Fuller's division and the battery were posted on a hill west of Sugar Creek when Confederates from William H. T. Walker's division appeared 300 yd (274 m) to the south.

Attacking again, the brigade advanced until being counterattacked by parts of both Fuller's and Sweeny's divisions.

The Confederate brigade fled and Union soldiers captured Nisbet and 500 prisoners.

States Rights Gist's Confederate brigade tried to move past Fuller's right flank but was hit by enfilading artillery fire from the 14th Ohio Battery and rifle fire from the 27th Ohio and 64th Illinois Infantry Regiments.

Gist was badly wounded and his troops quickly retreated to the cover of a nearby woods.

Another one of Walker's brigades under Hugh W. Mercer declined to attack over the corpse-strewn ground.