As for the point drilled in by the WTS about each country saying "God is on our side"...
Think of the situation of the plane that crashed in PA on 9/11, when the hijackers missed their D.C. target due to the uprising of the passengers against them. The passengers were faced with a decision. Resist these terrorists with deadly force and save many other lives as a result, or passively accept the fate that the terrorists had laid out. (I wonder what a JW on that plane would have done!)
Both terrorists and passengers each believed "God is on our side"!
Should that fact be used to discredit the brave, selfless act that the passengers performed? Should it have been a reason for them NOT to act? Should they have sat back and said, "I will not become involved. It is not my place."
Thank goodness they did NOT think that way.
Thank goodness those who resisted Hitler did NOT think that way either.