Complex sentence: In many ways the tactics employed by the US Navy during the first year of the Pacific War had been pioneered by AVG (The Flying Tigers), which was led by Gen. Claire Lee Chenault.Chenaults group of American volunteers flew in defence of Nationalist China.
Split into simpler sentences: In many ways the tactics employed by the US Navy during the first year of the Pacific War had been pioneered by AVG (The Flying Tigers) by Gen. Claire Lee Chenault. Chenault's group of American volunteers flew in defence of Nationalist China.