Thanks Leendert
I thought these codes were only for the USAAF, but the site you give makes it clear they were also for the US Army.
None of my sources indicate something like that.
Without reading the whole logistic part of the war, I confess it was a bit surprising to find out that....
:
BTW the Mann book is OK even if the destination codes are very superficially covered.
Cheers
Stig