"ArtKramr" wrote

But he ended up as a copilot with the 344th Bomb Group flying
B-26 Marauders..I always wondered why, with his experience,
he didn't become a left seater. Any ideas?

Probably the same as today. Indoctrination. Up to speed on the
crew concept, learn the systems as you go, and get real-world
experience in emergencies/problems.

He would have gone through co-pilot pretty fast, unless they had a
mandatory hour requirement.