Pvt Nolen Brock, 6th Inf, 1st Armd Div, N. Africa

I am searching for info regarding the circumstances of my Gr-Uncles death. He was listed as MIA 6Dec1942 and reclassified KIA the next year. Any and all info will be greatly appreciated. Any info on the 6th Inf's activities during this time will also be greatly appreciated.