I have not been able to determine who the battery was with at that time. It may still have been assigned to the Sub-District of North Louisiana. In late August, the battery was a part of a Light Artillery Battalion commanded by Major Thomas A. Faries, which also included H. C. West’s Arkansas, Haldeman’s Texas, and Benton’s Louisiana batteries and a detachment of Thomas’s (formerly Boone’s) Louisiana Battery.
My source is pencilled notes by Captain Benjamin Wade in his personal copy of “Instruction for Field Artillery” (Philadelphia: J. B. Lippincott & Co., 1860), which is a part of the Benjamin Wade Papers at the Fort Snelling History Center, St. Paul, Minnesota. Wade’s notes are as follows:
“Haldeman’s Battery Left to-day [no date given]
“Burned U S Transport Clara Belle July 20 1864
“Burned U S Transport Welcome July 21 1864”
His mention of Haldeman's Battery may mean that Faries's Battalion had been formed by that time. Unfortunately, Confederate sources on events in north Louisiana and southern Arkansas for that month are extremely scarce.