The Western Alliance was formed at some time during the 21st Century, from the EU and the United states, to combat the formation of the Eastern Coalition, in the 2100's, the Alliance and the Coalition declared war on each other's Colonies which lasted for decades, but eventually to the signing of the peace treaty on Europa which turned out to be a bloodbath and the start of the war.
The Alliance's patron nations were Canada,Germany, America, Britain, Japan, Spain, Italy, France and Australia.
The Italian and French fleets were utterly destroyed during the Great War.