DADDY-OH
"From what my Grandfather recalls of his time in France in June 1940"
I would just point out that the LAST day of the British Evacuation from Dunkirk was 4th of June 1940. In fact France, now bereft of Allies, fought on alone for a further 18 days until 22 June 1940.
In the 1960's I served with a MAQM who, having been shot down for a 2nd time in 1942, fought for 2 years with the Resistance in the part of France that I now live in.
Incidentally, seeing as you appear to favour the BNP, perhaps you could point out to the BNP Heirachy that the picture of a Spitfire that they have adopted as a backdrop for their Leaders Speeches bears the markings of No 303 Polish Sqn.