I forgot to add that I did find this book but haven't looked at it yet - I will BE looking at it real soon though:

The diary of A. Hugh Moss : Coulie Croche, St. Landry Parish, Louisiana, stationed at Vicksburg, Miss., April 25, 1863, mustered in the service of Lieutenant Millett, Washington, Louisiana, March 22, 1862 ; a diary or cursory sketch of events transpiring to my knowledge during the war between the Confederate and United States of America ; a daily account of the last siege of Vicksburg, beginning May 18 and ending July 4, 1863.