Alex,

Yep, it is the 6th!
From the Soldiers and Sailors system.

6th TX Field Artillery Battery (Jun 61-26 May 65)

H. Steussy (First_Last)
Regiment Name 6 Texas Field Battery
Side Confederate
Company
Soldier's Rank_In 1 Sergeant
Soldier's Rank_Out 1 Lieutenant
Alternate Name
Notes
Film Number M227 roll 35

Hermann Willke (First_Last)
Regiment Name 6 Tex. Fld. Battery
Side Confederate
Company
Soldier's Rank_In Capt.
Soldier's Rank_Out Major
Alternate Name H./Willke
Notes
Film Number M227 roll 39

Ben Herzog (First_Last)
Regiment Name 6 Texas Field Battery (Texas Light Artillery, Co. D)
Side Confederate
Company
Soldier's Rank_In Jr. 1 Lieut
Soldier's Rank_Out Sr 1 Lieut.
Alternate Name
Notes
Film Number M227 roll 17

E.J. Franklin (First_Last)
Regiment Name 6 Texas Field Battery (Co. D, Texas Light Artillery)
Side Confederate
Company
Soldier's Rank_In Jr. 2 Lieut
Soldier's Rank_Out Jr. 2 Lieut
Alternate Name
Notes
Film Number M227 roll 12

I hope this helps,
Gary D. Bray