68,000 British troops didn't make it back to the UK, 3,500 died, whilst over 100,000 French troops were evacuated.

Most of those 100,000 were packed onto French ships, sailed back to Brest just in time to surrender.

I know the French have concocted a mythology that the British abandoned them. However, when the Germans reached the coast after they crossed the Meuse at Sedan, the British expeditionary force was left isolated in Belgium and N France. By that point the shambolic French defences were already collapsing and the French govt had cut and run from Paris. There was no plan, no French co-ordination, no French airforce cover.

God alone knows there's enough blame to hang on the British army for fuckups elsewhere in the war, but the collapse of France isn't one of them.

keep to the Fen Causeway