Somehow I got this confused and read your post as saying he was in Co. E of the 2nd Alabama Inf. Here is what I have on him:
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DEWBERRY, Arby [Irby] 25th Alabama Inf., Co. E (Transferred from the 2nd Ala. Inf. Died 9/21 or 22/1863 of wounds received at Chickamauga.)
I assume that he was in Co. B of the 2nd Alabama, is that correct?