The Alliance was born in 2259, as a result of the Treaty of Unification of Sydney, which represented the last unification document of humankind, signed by the United Nations and the Martian Federation, as means to put aside their differences and engage into an interstellar union representative for all of mankind. The biggest influencing factor of this unification was the alien threat of the Crukrars, an extraterrestrial species currently engaged in a devastating war against humankind.