Premise: Hans-Arnold Stahlschmidt (15 September 1920 – missing in action 7 September 1942) was a German fighter pilot during World War II. A flying ace, he was credited with 59 victories against the Western Allies in North Africa. Stahlschmidt was a close friend of the prominent ace Hans-Joachim Marseille.
Hypothesis: Stahlschmidt flew fighter planes during WWII