Original sentence: Benny Morris writes that, after the war, Israel contrasted its "purity of arms" with the alleged barbarity of the Arab armies, which were said to have engaged in the mutilation of corpses of Jewish prisoners of war
Edited sentence: Benny Morris writes that, after the war, Israel contrasted its "purity of arms" with the alleged barbarity of the Arab armies, which had engaged in the mutilation of corpses of Jewish prisoners of war