Searching information about my grandfather

[Oberschlesien45]

Anton/i Kupka born 30.04.1907 years Kitstchtz. Soldier II Corps of Polish. Searching any information meanly, where fight in Germany army in begin 1942 - 1944 years ? Down sent others documents. Since the beginning of 1941 grandfather worked until 1944 to December - Arbeitsbuch. Then trace of him was lost. I do not know if he fought the troops of the Wehrmacht or in gen. Anders. I mean combat in North Africa at the beginning of 1944 years gen. Rommel, and then fighting in Italy. The last information from the German archive, the great-grandfather was a prisoner - a prisoner of war in Palagiano lager 368 - southern Italy. Then I got to gen. Anders, which posted large documents. Is England is any information that the great-grandfather fought in the German army from 1942 until 1944?