Complex sentence: The veteran destroyer remained on this duty for some months, escorting LST's to Woodlark Island for an unopposed landing in June of 1943 and protecting the important base at Milne Bay.
Split into simpler sentences: The veteran destroyer remained on this duty for some months. Later it escorted LST's to Woodlark Island for an unopposed landing in June of 1943 and protecting the important base at Milne Bay.