I am not denying the immense human effort and bravery involved in Dunkirk.
But it would all have been in vain if -
* Hitler had not diverted the bulk of his ground troops south
* A freak storm had not prevented many German fighter planes from taking off
* A once in a generation calm had not allowed many small vessels to cross the English channel
* A thick fog had not formed to protect the vessels from air attack
* Millions of people had not answered the call from King George VI to pray for God's help.
You may try to write it all off as coincidence, but it has happened before -
https://www.churchpop.com/2016/10/06/rosary-saved-christendom-extraordinary-miracle-lepanto/
I specifically didn't write it off as coincidence, I put it down to the efforts of people.
Hitler's strategic and tactical ineptitude was demonstrated innumerable times throughout the war itself, and in some of the political and social decisions in the lead up to the war - it was not something unique to the Dunkirk evacuation.
In the early years of the war the capability of German air power to function in all weathers was limited - slightly more so than the allies. The forward base areas they were trying to operate from were in areas where the inclement weather was more likely, again these were not unique events to the Dunkirk evacuation.
The weather was fortuitous, but not 'once in a generation'; the particulars of the operation were conducted in response to the weather, in at least some instances.
And the millions of people who answered the call - they were defending their way of life, stepping up when called upon. Maybe some of them - most of them, given the era - were believers, but that doesn't suggest that God had anything to do with it. If they were praying, how many of them were praying for Hitler to fall to a heart attack, or to die in the 20th July Plot, or to have a building collapse on him during a bombing run... and none of those happened.
If you want to claim responsibility for the Dunkirk evacuation for your god, you need to take responsibility for the Holocaust for your god, too. I'm more inclined to see both of those as the result of the range of human behaviour, from the laudable to the deplorable.
O.