[Stig Jarlevik]

Interesting thread

What interests me is from where the given names originate.

Huib
From where have you got the name Helmut(h) to connect with Miersch?

Larry/Doug
From where does the name Karl originate? It is clear from Doug's answer that it does not originate from any of the second hand sources quoted.
Quite probably there was (or were) one or two Karl Miersch or Mierisch, but what connects him to Arado 234 in Norway?

From Larry's further research the individual Kurt Mierisch sounds like a very plausible candidate.

I checked one other second hand source, Profiles in Norway, No 5, Arado 234B-2. It does not give us any further clues as such but it states that Miersch was a testpilot at Sola with Einsatzkommando 1./FAGr.1 and that it was probably he who had a landing accident on August 1st, 1945. It also said that previous to the flight discussed here, both Eric Brown and Miersch had flown WNr 140356 and 140141 respectively to Grove on September 23rd. Both returned to Sola with a Si 204 that same evening. The British were also rather distrustful (at least initially) about Miersch and had at one time threated him if he tried to escape.

The booklet at all times call him a Hauptmann but it could easily be a corruption of a civil title as stated by Larry.
Using testpilots who were rather old was probably legio, especially with the war now in its 7th callender year. Experience is more worth than youth! So nothing odd with a man appx 45-46 year sold used in such a capacity.

One other thing of interest (to me) is that the Einsatzkommando 1./FAGr 5 was renamed Einsatzkommando 1./FAGr 1 when it arrived in Norway.

Cheers
Stig