Not Montdidier...Like some of you may have guess this a Battle of Britain airfield, German side...those are an enormous lot less known than their UK counterparts...Its name will certainly ring a bell when I give it like the others before it (and the next ones he he he)...
It is in the vicinity of Calais (like two dozens of like fields) and if you give a name try to assess it on Google Earth; it is perfectly possible but a lot less easy than Peuplingues for instance...the reason is a kind of optical illusion...please give this reason too...