A Google Search "Confederate Soldier Charles L. Brock" will yield this Fold3 one page summery which is difficult to decipher:

'C. L. Brock,
Cpl. Company G, 16th Regiment Georgia
Cavalry
Captured Knoxville, Tenn. Sept. 22, 1863
Died July 28, 1864 at Fort Delaware
Typhs [sp?]

Charles L Brock: Person, pictures and information - Fold3.comhttps://www.fold3.com › page › charles-l-brock › photos

Note: I do not have access to Fold3