That is interesting, so it really would be propaganda then.
It was.
A similar poster was produced by Germans for the French consumption: "C 'est L'anglais qui nous a fait ca".
Anyone care to comment on these?
This is a game of words that in effect has two meanings:
1. Poland was the first country to put up a fight against the Germans (Austria and Czechoslovakia didn't)
2. Poland is always ready to fight. Implies that Poles do not look for excuses to avoid a just fight, or look whether others are ready if there is a need to fight.