Complex sentence: Nonetheless, the Indian warriors, whose customs permitted the enslavement of some captured enemy soldiers and the scalping of others, ignored French efforts to prevent the massacre and killed or captured hundreds of the surrendered British force, including women, children, servants, and slaves.
Split into simpler sentences: Nonetheless, the Indian warriors' customs permitted the enslavement of some captured enemy soldiers and the scalping of others, and they ignored French efforts to prevent the massacre. They killed or captured hundreds of the surrendered British force, including women, children, servants, and slaves.