I really enjoyed watching the above dramatisation on Polish Squadron 303, the men of whom flew in defence of Britain during the Battle of Britain. Despite losing raw recruits left, right and centre, the British were most reticent in allowing the very experienced Polish pilots into the air, and they were only allowed up when one of the pilots broke off from a training run to engage with the enemy. Even then, it was only when their British commander flew with them did he believe they were actually devastatingly effective.
So cool to see it, I highly recommend it.