Much of this following data came from the Spring, 2005 issue (number 44, ISSN 1094-1711) of Rhodes Crossroads Newsletter, a newsletter for Rhodes genealogy researchers by Craig Rhodes.

David was born in 1829 in Alabama. He enlisted in the 36th Alabama Infantry on 1 May 1862, at Mt. Vernon, Alabama.
Here is the link: http://rhodesfamily.org/david_roads.php