G.,
Recently on a Louisiana Confederate Widows Pension Application, I found a reference to a Dunlap's Battalion Heavy Artillery that was in service at Grand Ecore, LA at the close of the war. If you find any information on Gen. Dunlap, I would be very pleased if you would share it with me. My e-mail address is: La27Infantry@wmconnect.com
Good Luck in your search and I hope this helps.
Terry