It is an American cartoon in which Donald Duck is part of the Nazi's army. It showed how they forced their soldiers to be constantly working, how they feared their superiors and had to hide because of it. In the end, it revealsed it is all just a nightmare and donald duck is actually part of the Americans and he feels releaf of it because America is a great countrie. It is clearly showing how America had a better treatment.
This is the anouncment speech from Churchill to Britain. The British governemt had given Germany an ultimatum which they ignored, and therefore Britain and Germany had entered a state of war.