I assume you are asking about a land territory. The answer would be no. When you attack a land territory, you attack all country’s units that are in that land territory. So if Russia attacks an Italian territory that has German units in it, then Russia just declared war on Germany.
Sea zones are different. In a sea zone, you can attack one power’s units while other “neutral” power’s ships will simply sit there.
Russian winter realisticly unrealistic
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Thats fairly the same ratio that existed before the Germans even attacked the Soviet Union. The difference was Germany was only prepared to fight the war “on the cheap” with a quick victory. This could overcome long odds only if it was decisive and daring plan. Once the offensive bogged down and the Soviets had time to catch their breath and learn from their mistakes the scale tilted not only quantitatively but qualitatively. The winter was one such ‘break’ to gain a rest from the German onslaught.
If the Germans had ever commited a ‘total war’ approach earlier in the war things would have been different to make up for the numbers against them.AS it was it was too many to fight at one time.





