Answer:
Because they were considered either valuable or "honorable" by high commanding officers of the Nazi regime.
Explanation:
The Final Solution was the name of the plan for the mass genocide of Jewish people during World War II. Even people who were had one Jewish parent of even Jewish grandparents were included in this plan, in accord with the goal of exterminating all Jews and leaving the Aryan race in power. However, some individuals were spared by Hitler himself or other high commanding officers in recognition of their achievements, years or service or other reasons. For example, we have the case of Ernst Hess, who was a WWI veteran and even was a commanding officer in the same company Hitler was. Hess was also born to a Jewish mother, and although he was christened as a protestant, in Nazi Germany he would have been considered a prime target for prosecution and internment in concentration camps. In a letter from Heinrich Himmler, one of the architects of The Final Solution, to the Gestapo, it was stated the Hess was to be spared any prosecution and he was to be protected by Hitler's own wishes.
