And if you were Polish you would know that the Soviets were bad for invading originally, and the English were also pretty bad through their initial inactivity. In fact if you look at the death toll by nation, one could argue that the UK barely went to war at all. The UK lost what, 400,000 people? Compared with Poland's 5,000,000? And of course a significant portion of the pilots in the Battle of Britain were Polish, and the Enigma machine was cracked by three Polish mathematicians eight years prior to Alan Turing pushing the work over the line (and subsequently taking all the credit for it, at least in the eyes of the British).