Complex sentence: Arriving at Morotai on 16 September 1944, the day after the American landings there, she commenced tending the boats of her squadron and Consolidated PBY Catalina flying boats assigned to air-sea rescue of pilots downed en route to and from raids on Truk.
Split into simpler sentences: Arriving at Morotai on 16 September 1944, the day after the American landings there. She commenced tending the boats of her squadron and Consolidated PBY Catalina flying boats assigned to air-sea rescue of pilots downed en route to and from raids on Truk.