Further investigation, it's one of three satellite fields built at the same time as the main field
- this one doesn't exist any more
- another still in use
- the third is recognisable - but no longer active.
4th satellite built 3 years later.
The main base is still active.
There seem to be a fair number of auxiliary fields as well (from little know airfields) - but I have no pictures of these.
Was built before the US entered the war.