The Pennsylvania in the Civil War Message Board

13th North Carolina infantry

Towards the end of March or the beginning of april 1865, the 13th North Carolina regiment had a battle near Burgess Mill south of Petersburg. The following men were listed as casualties

Private James Bartlett, Co. B, killed in action
Private Robert Graham, Co. D, killed in action:
Private Robert Sergent, Co. D, wounded in action

can anyone tell me the date they became casualties and what the battle is called?