Along the following lines:
France, Spain, Italy, Austria-Hungary, The Ottoman Empire, and allies (with Portugal either neutral or as a nominal or active ally...)
Vs.
Germany, Russia, the United Kingdom, the United States, and allies...
And go...
France, Spain, Italy, Austria-Hungary, The Ottoman Empire, and allies (with Portugal either neutral or as a nominal or active ally...)
Vs.
Germany, Russia, the United Kingdom, the United States, and allies...
And go...