Generally speaking powers defend together. However in G40 there are powers that start off neutral (Russia and USA) or not at war with each other (like Japan and UK/France). You could have a case at sea when you attack a sz with units from multiple powers, and can ignore the units that belong to a power that you aren’t yet at war with.
Question about Political situation
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Question:
Does an attack on ANZAC bring the US into the war??
Just wondering given the fact that Japan had been fighting the UK and ANZAC before the US got involved.
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An unprovoked attack on UK/ANZAC (both are treated as one for political purposes) by Japan allows the US to declare war on any/all Axis powers.
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Also, their holdings were attacked about the same time as Pearl Harbor.
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If Japan attacks ANZAC, and the US declares war on Japan, can the US also declare war on Germany and/or Italy?
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Yes.





