By the way, I just saw another posting on this website from 2006, from Jim Cook, stating that Henry C. Green enrolled in the 27th on July 22, 1862 and deserted on Aug 1 1863 at Girard LA. This is probably another Henry C. Green. I have documentation showing that our Henry C. Green joined the Paraclifta Home Guard (a115 man company comprised of "old men and young boys" - Henry would have been 46 in 1863) - in Sevier County - in February of 1863 - right in the middle of when Jim Cook's info would have him supposedly off somewhere else with the 27th. Note that in 1862 he would have been 45 years old - exempt from service with the regular army (the 27th), but young enough to serve with the militia. Also, Goodspeed's bio has him serving from *1864* until the end of the war.
I'm still working to pin down the details, but it appears he joined the Paraclifta Home Guard in February 1863, probably for a six-month enlistment, doing mostly routine patrol and escort duties, and later in the year went to another company serving with the "Arkansas" Battalion (a militia unit) for the rest of the war, as did most of the other men of his unit. The Arkansas Battalion stepped up and served with distinction in the Camden Expedition of 1864 - fighting at Poison Springs and Mark's Mills, among other places. It went on the serve until the surrender in 1865. This would explain Goodspeed's reference to him serving (actively) from 1864 until the war's end. But I haven't been able to find him on of the available Arkansas Battalion rosters to show where he served the rest of the war.
Any Henry Green serving in a unit before Feb 1863 is probably not our Henry C. Green.