The Germanjuggernaut was a well oiled force by the time it hit France the French
along with the British
were totally unprepaired for the tactics evolved by the Germans mainly Blitzkreig they made a mockery of the Marginot line if the numptee in charge was prepared and went across the channel straight away then it all could have been different also numptee having a war on 2 fronts helped the allied cause.
Bit like the attack through the Ardennes forrest moving tanks in which allot of allied commanders thought impossible but fact proved them wrong the only thing certain in that war or any for that matter is the enemy is coming from where you least expect it and will do their utmost to kill you and all your other companions.
Burning aircraft,
Geoffery Page commented on this when his aircraft went up* said of the experience you went from 0-3 degrees to 350 degrees in about 3 seconds
*Think it was a Hurricane with the fuel tank behind the instrument panel which Geoffery thought was a stupid place to put it, he said that all the plexi glass had melted from the frame work of the sliding canopy before he was able to exit the aircraft.
By sheer guts he eventually regained flying status and with another P-51 pilot who had lost his left fore arm they flew together as a pair on Rhubarbs sadly the latter did not survive the war.
In the book "The Guinea Pig Club"