Complex sentence: The unit's first operation was an unopposed landing at Nadzab, New Guinea, on 5 September 1943.The Regiment jumped in the Markham Valley, New Guinea, on 5 September 1943, in the first successful airborne combat jump.
Split into simpler sentences: The unit's first operation was an unopposed landing at Nadzab, New Guinea, on 5 September 1943. The regiment jumped in the Markham Valley, New Guinea, on 5 September 1943, in the first successful airborne combat jump.