I'm afraid that what I've already posted is about all I have on the 12th Arkansas for this period of the war.

Here are a couple more references;

9/26/63 HQs Logan’s bgde-Crystal Springs, Ms- Pvt James Wood asking to be returned to his Co F of 12th Ark now being organized at Camden, Ark., Said regt having been exchanged—approved Griffith Col cdg

12/8/63 near Washington, Ark-HQs 20th & 12th Ark reg’ts & 12th Bn Ark vols-resignation of Capt Glascow of 12th Ark-appd Col Jones 20th Ark-endorsed/appd-HQ P & E prisoners Washington-Gen Dockery cdg

3/2/64 Shreveport- S O #52
Col Reid 12th Ark to report to Gen Dockery cdg without delay for the purpose of assuming command of his Regt