Boer War 1899 - 1902

Does anyone know if there are names recorded for the pictures? My Great Grandfather fought in this battery and I believe he is in the second row from the bottom only because the man in the picture looks like my father. I would like to know for sure though and I am not sure where I would find this information. There are 24 people in this picture but there are only 13 records listed. Thank you Lynn