One of the interesting things about Britain is that its self-image of "invincible nation of destiny" is based upon editing out any historical fact which is, err..... "inconvenient".
I grew up on Francis Drake and the Defeat of the Spanish Armada as well and was as proud of that as any British schoolboy. But the history that WASN'T taught in British schools was that Sir Francis himself led an expedition against Spain a couple of years after 1588 that was defeated and wrecked as badly as the Spanish Armada was.
England won at Agincourt, but lost a whole disastrous series of battles against the French after that and ended up losing the war. To the French. Who then dominated Europe for the next 300 years while Britain was a 2nd tier power.
England defeated the French at Waterloo, but was routinely defeated by Marechal de Saxe 's French army in the 1740's. Etc.
Yeah that is why the British Empire became the biggest in history , kicking the French out of North America and kicking the French out of the crown jewel India and stealing the Spaniards gold
That is why, the Royal Navy controlled the oceans for two whole centuries. Every other navy, wet their pants when they saw the Union Jack
That is why by 1913 the British Empire held sway over 412 million people, 23 per cent of the world population at the time, and by 1920 it covered 35,500,000 km 2 (13,700,000 sq mi), 24 percent of the Earth's total land area.
That is why the English , Canadians and Americans had to save the French bacon twice in the 20th century
That is why nobody has successfully invaded Britain in almost 1,000 years
That is why English is the international language of commence world wide
The best days of the British empire have past
However as far as "invincible nation of destiny', while not undefeated,
the British empire was numero uno in recorded history (the Mongol Empire is distant second with 24 MM sq km and they stayed away from the oceans)
That little Island nation Britain, kicked ass for centuries
They did a lot of nasty, despicable and barbaric things in the process and they left a lot of unmanageable messes behind