Nobody got screwed more in WW2 than the Polish. The most decimated city in WW2 was actually...Warshaw. Not Berlin, Hiroshima, Hamburg or Coventry.
Poland was the line that the Nazis crossed, and the nations who declared war on them were the British and the French.
As things went, the Brits (Commonwealth included, - which is important) carried on, ALONE, and while the Nazis were suckling on several European countries (Poland, France, Lowlands, Norway&Denmark etc), the Brits were paying their U.S. manufactured gear in gold. In the meantime, the USSR was doing deals with the Nazis.
So, as I see it, the USA should have flushed those "depts" years ago. Just to keep a good face.