[Franek Grabowski]

Craig
I do not think Rudel carried his cup on the frontline. I guess it was captured or looted elsewhere, possibly in one of the bases in Germany. I do not think log books would make a good toilet paper for very practical reasons.
Anyway, Johannes provided a credible version of logs being destroyed on order. Had they been destroyed on order, lost in a lorry with other paperwork of the unit or whatever, it would sound credible. I can imagine, that the log books were confiscated and then destroyed as of no significant intelligence value, but I would expect that related paperwork should exist. But the claim that logs were stolen, and nothing surfaced over the years does not seem likely to me. I can imagine some were lost over the years, but not all of them.