Here are some references that might offer a clue. The first references "Camp Forney," perhaps the previous name of Camp Cumming.

October 8, 1862: On the 8th day of October, 1862, the camp at Marshall Austell was broken up and the 40th Regiment ordered to Camp Forney, on Spring Hill Railroad four miles from Mobile, between Government and Dauphin Streets, and was there ordered into a brigade composed of the 18th, 36th, 38th and 40th Regiment Alabama Volunteers, at first commanded by Col. J.T. Holtzclaw, senior colonel for about two weeks
Diary of Captain E.D. Willett, History of Company B, 40th Alabama Regiment

February 22, 1863: The Col. & half the Regt. is at the Fort. The Lieut. Col. & the other half are attached to Brig. Genl. Cumming's Brigade, which consists of the 18th, 36th, 38th Ala. Regts. & our Battalion of Ga. Vol... Col Smith commands the Regt. & Tom Herndon is Major... Mrs. L. [LaVert] sent me an invitation to dine with her today, but I was too lazy to walk half a mile… We have named our Camp for our General. The 18th Regt. is camped near the residence of Miss Evans & in compliment to her call their camp "Beulah"
"Believe Me Your Own, Letters from the Battlefield. To Fanny from Alex," Baylor University

September 2, 1863: Reached there on the 2, Camp Hall's Mills. Remained there until the 18

September 18, 1863: marched 10 miles north to Camp Cumming. Remained there until the 22 of November
Civil War Diary of Sgt. William Daniel Thompson, Tennessee State Library & Archives

October 8, 1863: We are situated 4 miles west of Mobile at Camp Cummings.
Stephen Washington Holladay's Civil War Letters," Tennessee Historical Quarterly, Vol. 4, No. 3 (September 1945)