In the 1930s he was a staff officer who wrote a textbook on air warfare tactics.
In 1930 he wrote a textbook on air warfare tactics. In the 1930s he was a staff officer.
In the 1930s he was a staff officer. In 1930 he wrote a textbook on air warfare tactics.
In the 1930s he was a staff officer. In 1930 he wrote a textbook on air warfare tactics.