Britain would never have surrended and the most importamt victory of WW2 the Battle of Britain proved that. If we had lost then there would have no way to invade Europe from the West and Hitler would been able to double his forces in the East fighting Russia.
The British rallied to ensure these men lived to fight another day. It is truly a heroic event in history that shaped events for Nazi Germany’s eventual defeat in WW2. I’m looking forward to seeing this movie.