History of Space Exploration: Chapter 2, Exercise 3 — Possible Solution
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ESTABLISHED (per the sources)
Party membership from 12 November 1937; SS from spring 1940, promoted to
Sturmbannführer in June 1943; visits to Mittelwerk 12 to 15 times.

HIS CLAIMS
He said he joined the Party in 1939 (records show 1937), that refusing would
have meant abandoning his work, that he wore the SS uniform once (contradicted
by a former SS officer), and that he never saw deaths.

DISPUTED
Whether he bears moral responsibility for the forced-labour deaths, and how
much he saw. FBI and Neufeld conclusions are reported by the article, not
independently checked.