In 1939, the British Commonwealth went to war with Germany to defend Poland's sovereignty.
In 1946, it surrendered that sovereignty to the Soviet Union as the price for peace.
But that wasn't the message being sold to the British public and the exiled Polish community "now our guests and also our very gallant comrades in arms" in 1941.
Instead, this joint Polish-UK propaganda film sought to exhort their populations to "believe in the better world tomorrow. Democracy must be made a living thing."
"From the mistakes of pre-war Europe, we must learn that selfishness is the most shortsighted policy. And that either we unite against the common enemy, or perish..."
History may not repeat.
But it does rhyme.
A lot.