A slow start to an otherwise good animation. Love the art style and direction. Yet, as many others have pointed out, no one bombs open fields. I wouldn't have even noticed this discrepancy if you didn't write France 1940. Once it's set in a real world there are rules of realism to follow. Bombs cost money and they are manufactured to kill people and destroy buildings.
I'm excited to see where you'll take the story and I hope for less plotholes.