[John Vasco]

Thanks for that, Peter, pointing out the overlap of branches.

However, from what I have read in the recent series of 'Luftwaffe Crash Archive', it does appear that 'g' and 'k' were two separate arms of the overall intelligence-gathering branch, albeit mutually supportive.

What I write next many will already know, as you do Peter, but it may be worth setting it down here.

The officers on 'g' duties fed in details of what they found at the crash sites. That is borne out by the reproduction of an A.I.1.(g) Form C reproduced in Luftwaffe Crash Archive, Volume 3, page 259.

And as we know, 'k' were the bods who said, 'walk this way, sit down, let's talk!'

And yes, there was cross-fertisation of information. Info gleaned from the crash site would be used to confront a prisoner with such details at interrogation time. And information at interogation time would feed into technical knowledge on items found in wreckages (Karl Stoff & Seilbomben spring to mind in this instance).

So I do not disagree with you. In the fraught times of 1940, British Intelligence Services no doubt harnessed and cross-referenced everything, and if there were overlaps, what the hell!