Wesley Lewis Battle appears on p. 511 of /The Battle Book: a Genealogy of the Battle Family in America/ by Herbert Bemerton Battle, Lois Yelverton, and William James Battle (Montgomery, AL: Paragon Press, 1930).
He was the 10th and last child of William Horn Battle and Lucy Martin Plummer (let me know if you would like more information on the parents and siblings of Wesley Lewis Battle).
The following is what the Battle Book has to say about Wesley Lewis Battle (*notice* that the information concerning his death differs from what you have):
"Wesley Lewis Battle...b. Chapel Hill, Oct. 13, 1843; wounded in forefront of Pickett's Charge at Gettysburg and d. in field hospital, Gettysburg, Aug. 22, 1863; Lieut. 37th N.C. Regt., C.S.A.; student 1859-62, Univ. N.C., leaving to join C.S.A.; Episcopalian; unmarried."