Charles A. Allen (or C. M. Allen)
Squire J. Huey (or S. J. Huly)
Joseph E. Martin (or J. A./J. H. Martin)
Several other men who were captured at Madison, Arkansas, with the above and John Rose, took the oath of allegiance within days of reaching Gratiot Street Prison at St. Louis, and were presumably released thereafter.
One other clue to John Rose being a member of the 30th (5th) Arkansas -- his company was recruited in Poinsett and St. Francis counties, Arkansas, and the 1860 census of Poinsett County lists a John Rose, whose age matches the man we're talking about.
I mentioned earlier that there was confusion in my mind about John Rose's record of desertion, as both July 1862 and February 1863 are mentioned. I have a copy of the February 28, 1863, muster roll for his company, and upon closer examination what it actually says that he was dropped from the rolls for desertion in February 1863, for deserting on July 8, 1862. Intervening rolls probably carried him as "absent without leave" since July, and he was finally declared a deserter in February.
Let me know what you figure out about these men. As far as I'm concerned, you're the "go to" guy for anything involving prisoners of war. You've sure cleared up some mysteries for me in the past.
Bryan