Complex sentence: In two sorties, the Hurricanes shot down six Japanese planes for the loss of one of their own; they flew back to Kallang halfway through the battle, hurriedly re-fuelled, then returned to it.
Split into simpler sentences: In two sorties, the Hurricanes shot down six Japanese planes for the loss of one of their own. They flew back to Kallang halfway through the battle, hurriedly re-fuelled, then returned to it.