Damon -- Some obscure synapse in this aged brain fired up a few minutes ago, and caused me to remember that I had a collection of Stirman's letters I had forgotten about. It is titled "In Fine Spirits: The Civil War Letters of Ras Stirman with Historical Comments by Pat Carr."

The comments portion states that Stirman and his battalion were camped at or near Arkadelphia when the war ended. They went to Fort Smith, where they turned over their arms to the Federal garrison there. This information is credited to a letter from Marshall Henry to his brother at Fayetteville. "We marched finely to Fort Smith. The feds seemed glad to see us." Marshall Henry was a private in Co. K, 34th Arkansas Regiment Infantry, as of February 29, 1864. I don't know if he later transferred to Stirman's battalion, or if he just attached himself to that command. The 34th Arkansas was down around Marshall, Texas, when the war ended.