Complex sentence: The ship is notable for having served in both World War I and World War II. Despite its age, it was active throughout the latter war, its service ranging from convoy escort to shore bombardment to engaging enemy battleships.
Split into simpler sentences: The ship is notable for having served in both the First and Second World Wars. Despite her age, she was active throughout the latter war, with service ranging from convoy escort to shore bombardment to engaging enemy battleships.