Dommage. I was very fond of the images the phrase conjured up. The analogies with "mobile mechanics" with their vans and the sorts of phrases involving words like "service' "at your home" etc ( I'm aware this is a family-oriented, G-rated site, so won't be more explicit).

At the same time, I'm sure that official brothels were organised by the British and the French armies (if not all) at least in WW I. Robert Graves describes such in his memoirs. They were of course either for officers only or for O/Rs. I believe that during the Napoleonic Wars you had to organise your own.

Cheers

C