Complex sentence: On 24 August 1945, Winfield left China on a U.S. Army plane, and finally arrived in the U.S. on 7 September 1945, the same day Wake Island was formerly surrendered by the Japanese.
Split into simpler sentences: On 24 August 1945, Winfield left China aboard a U.S. Army aircraft. He finally arrived in the U.S. on 7 September 1945, the same day Wake Island was formerly surrendered by the Japanese.