Complex sentence: In 457 First Age it was stormed and taken by Sauron lead a Host of Orcs and Werewolves following Morgoth's victory in the Battle of Sudden Flame, Dagor Bragollach.
Split into simpler sentences: In 457 First Age it was stormed and taken by Sauron. He lead a Host of Orcs and Werewolves following Morgoth's victory in the Battle of Sudden Flame, Dagor Bragollach.