Andrew Pyeatt was enlisted in Co. H, 15th Arkansas Regiment (Northwest), McRea's Reg., C.S.A. (Note: this regiment was first the 3rd Arkansas Inf. Battalion, then the 21st Arkansas Inf. Regiment, before becoming the 15th Ark. Inf. Reg. Northwest).

According to Andrew Pyeatt, "I enlisted on Cain Hill, Washington Co., Ark., by Pleasant Buckhanan, Captian of Company, H, as I remember, in 15th Ark. Regiment, Comanded by Dandrage Mc Rhea, staid in Company three days. Was detailed to drive a team. I was appointed wagon Master about last of December 1861, was left at Dazark, White River, Ark. when Van Dorn's and Price's army was ordered to Corinth Miss. Went under the charge of Capt. Gus Ward, quartermaster in charge of all the convalescence stock, I acted as wagon Master for him. To Prairie De Han on Red River where the stock was turned over to Capt. Rector. I with all my teamsters was ordered back to Little Rock, Ark. there I met Colonel Dandrage McRhea who had returned from East of the River with authority to raise a brigade, he taken me with him to Searcy White County, Ark. Made me wagon master of his Brigade. I remained wagon master of his Brigade while he commanded also, while General Tom Churchill commanded same. Then I was transferred to Major Tom Munroe, Quarter Master of the Trans-Miss. Dept. in Charge of all the commissary supplies and transportation. I remained with him as chief wagon master for him until I was ordered to Texas, by the chief Quarter Master of the Trans-Miss- Dept. I came to Dallas as ordered as above stated and when I reached there I went to Corsicana and remained there until able to travel and then went to my home in Ark. Washington Co. Remained there until Nov. 1870. I came to Texas and have lived in Texas continually since. I was often asked to take the Amnesty Oath, but always refused."

Pyeatt also recalls, "I was wounded fourth day March 1865 in Ark. on Red River and was order. about 1st April 1865 to Dallas, Tex. to take charge of Dallas Post as Post Wagon Master - when I reached Dallas, the thing was busted up so I got no discharge and would never take the Amnesty Oath."

According to Pyeatt's physician, Dr. G.M. Calloway, disabilities to Andrew Pyeatt were, "gun shot wound in right ankle which frequently produces erysipelas edema & consequent disability. Also a recurring dysentery which he states has recurred at intervals since service in war. His age and environments with above disabilities render him unable to procure a living by manual labor."646

Andrew J. Pyeatt served in the same unit as his brothers - Alvin F. Pyeatt and William H. Pyeatt.648