Complex sentence: An attack was made by the Te I'i and their American allies, during the fighting the lieutenant was hurt by a rock which hit him in the stomach and another man was wounded by a spear, to the neck, but he apparently survived.
Split into simpler sentences: An attack was made by the Te I'i and their American allies; during the fighting the lieutenant was hurt by a rock which hit him in the stomach. Another man was wounded by a spear, to the neck, but he apparently survived.