Charles, Phillips did the trick my friend. How bout this=
"Battery L was organized at Camp Douglas, by Captain William H. Bolton, and mustered in February 28, 1862.

On March 11, 1863, moved to Benton Barracks, Mo., and on April 8, rings, and had a sharp engagement with the enemy. On 10th, the whole Battery was in action, all day, at Blue Springs. On 13th October, came up with enemy at Blountsville, and engaged him. Pursued the enemy through Carter Station, Zollicoffer and Bristol, and to near Abington, Virginia. On the 16th, fell back to Bristol. Colonel Carter's Brigade was ordered to Rogersville, where it arrived on the 19th.

On November 5th, Captain Phillips was ordered to Nashville, leaving Lieutenant Stevenson in command. On the morning of the 6th, the camp was attacked by the rebel General Jones, with 4,000 men. After a sharp engagement, in which the Battery lost 4 men killed, and 35 captured, the guns were spiked and abandoned. 86 men and 50 horses and wquipments were saved.

The detachment went into camp at Camp Nelson, Ky.

Hope this helps. William CGL Stevenson ended his service as SR 2ND LT. He was 38 at enlistment. Joined at Chicago and mustered in At Camp Butler near Springfield. I should add that when he mustered out he was now in M instead of L and was a Junior 1st Lt.
Frank