According to Avi Shlaim, "purity of arms" is one of the key features of 'the conventional Zionist account or old history' whose 'popular-heroic-moralistic version of the 1948 war' is 'taught in Israeli schools and used extensively in the quest for legitimacy abroad'. Morris adds that 'Israelis' collective memory of fighters characterized by "purity of arms" is also undermined by the evidence of [the dozen case of rapes committed in conquered towns and villages.' According to him, 'after the war, the Israelis tended to hail the "purity of arms" of its militiamen and soldiers to contrast this with Arab barbarism, which on occasion expressed itself in the mutilation of captured Jewish corpses.' According to him, 'this reinforced the Israelis' positive self-image and helped them "sell" the new state abroad and (...) demonized the enemy'.