Rommel was a great man. IIRC Nazis had tried to pressure him to mistreat or kill prisoners and he would have nothing to do with Nazi evil. That was no small thing in the Third Reich.
He was a member of the plot to kill Hitler and paid for it with his life.
Actually, he was not a member of the plot. He was approached by a leader of the plot, but declined and ordered the man out of his house. He was a soldier, not a politician. Knowing the war had been lost, he was interested in finding a way to surrender to the Allies that would stop the destruction of Germany and its people. He was denounced as a member of the plot by the very person he had sent packing. He agreed to suicide on the condition that his family would be untouched. I have often thought that if Rommel had been allowed to live and Patton had survived the accident, the two would have worked together to avoid many of the problems of post war Europe. Unfortunately, the IFS don’t count in reality.
You are absolutely correct in his refusal to follow the edict of Hitler to execute spies or POW’s. He also refused to sacrifice his men in Hitler’s order to stand to the last man at El Alamein. He was a great man and loved by his men, as was Patton. One of my good friends was a “Patton boy.”He says when Patton walked on water, all his men could walk on water too.