This surgeon's report in the Official Records gives the breakdown. Here is the listing for the 24th Georgia.

George Martin

O.R.-- SERIES I--VOLUME XIX/1 [S# 27]

SEPTEMBER 3-20, 1862.-The Maryland Campaign. [p.813]

No. 205.--Report of Surg. Lafayette Guild, C. S. Army, Medical Director Army of Northern Virginia, of killed and wounded at Boonsborough (South Mountain or Turner's Pass), Crampton's Gap, Harper's Ferry, Sharpsburg (Antietam), and Shepherdstown (Blackford's or Boteler's) Ford.

Cobb's brigade.

Killed. Wounded. Total

Georgia Legion 18 68 86
16th Georgia 23 83 106
24th Georgia 13 145 158
15th North Carolina 16 143 159