Some names of militiamen captured at Selma appear in the Alabama miscellaneous file, National Archives collection of Alabama Confederate soldiers, M311. I suspect that Alabama Senior Reserves, who should be considered among Confederate soldiers, are sometimes counted as militia during this campaign. The two main bodies of Alabama reserves who fought at Selma belonged to Barbiere's and Hardie's Alabama Cavalry Battalions.
In his letter of April 9, 1865, Capt. Charles T. Hardman, Co. "B", 6th Alabama Cavalry, mentions militia in camp near Benton in Lowndes County. He remarks that these men wish to see fighting done, but are unwilling to do it themselves.