Complex sentence: Due to his position in the American Legation in Beijing, Barrett moved with the Nationalist government as it fled the approach of the Japanese, first to Hankow, where Barrett often drove out to the front line to observe the fighting between the Chinese and Japanese forces.
Split into simpler sentences: Due to his position in the American Legation in Beijing, Barrett moved with the Nationalist government as it fled the approach of the Japanese. First to Hankow, where Barrett often drove out to the frontline to observe the fighting between the Chinese and Japanese forces.