The son of World War II Auschwitz death camp hero Witold Pilecki is seeking millions in compensation from the Polish government for his father’s post-war arrest and 1948 execution by the country’s communist authorities of the time. The case opened Thursday before a Warsaw court and the next session is scheduled for January. Andrzej Pilecki, aged 90, argues that 26 million zlotys ($5.7 million) compensation would be due to his father by Poland’s law that redresses communist-era wrongs. His father, Cavalry Capt. Witold Pilecki, a Polish resistance member, volunteered in 1940 to be caught by the Nazi Germans and held...