摘要：FROM THE heights of todav’s aerospace industry, it is almost humbling to look back just 70 vears ago to when American pilots vvere fighting their first air battles in the open cockpits of borrowed planes. Unweaned when we entered the First World War in 1917. the US Army’s tledgling air arm had only a handful of assorted tlying craft, none of which vvas vvorthy of combat.
