"Wehtmacht directly fought against the uprisers", and berlingowcy fought directly against Wehtmacht troops, therefore, they were belligenents, although, as you correctly pointed, not the participants of the uprising. Berlingovcy participated in the hostilities directly related to the uprising, they are listed among casualties (about a quarter of total casualties). Obviously, they must be among the belligerents, and Berling must be in the commander's list. In my opinion, division of the Poles onto first sort and second sort'' Poles is unacceptable.