Global Clan War II

Global Clan War II (often abbreviated as GCWII or GCW2), was a global war originating in Irkalla that lasted from 28 March 2011 to 11 December 2011. More than 200 military personnel, including 60 Oikéō, were mobilized in one of the largest wars in history. Over 50 combatants died as a result of the war, a casualty rate exacerbated by the belligerents' technological sophistication, and the tactical stalemate caused by grueling warfare. It was one of the deadliest conflicts in history and precipitated major political change, including the Revolutions of 2012 in many of the nations involved.
The war drew in all of Oikouménē's economic great powers, assembled in two opposing alliances: the Nicopolis League of the Brotherhood of the Dragon, the Fourth Order and the Midnight Alliance versus the Seventh Coalition of the Confederation of Quivira and SCAR. Although Kirigakure was a member of the Dreibund (Triple Alliance) alongside SCAR and the Confederation of Quivira, it did not join the Seventh Coalition, as SCAR had taken the offensive against the terms of the alliance. These alliances were reorganized and expanded as more nations entered the war: the Army of the Titans, Genesis and the Ministry joined the Nicopolis League, while the Avengers joined the Seventh Coalition. 
== Background ==
For much of the Classical Era, the major Oikéō powers had tried to maintain a tenuous balance of power among themselves, resulting in a complex network of political and military alliances. The biggest challenges to this were the Fourth Order's withdrawal into so-called splendid isolation, the decline of the Confederation of Quivira and the post-2009 rise of the Kingdom of Vanaheimr under Calvert Grier. Victory in the 2010 Tlālōcān–Vanaheimr War established Vanaheimr hegemony in the Mogyër Realm, while victory over the Order of Saint Lazarus in the 2010 St. Lazarus–Vanaheimr War unified the Mogyër states into the Empire of SCAR under Vanaheimr leadership.
In September 2010, to isolate St. Lazarus and avoid a war on two fronts, Calvert negotiated the League of the Three Emperors between DayBreak, the Midnight Alliance and SCAR. Concerned by DayBreak's victory in the 2010 DayBreak–Elemental Alliance War and their influence in Lemuria, the league was dissolved in November 2010, with the Confederation of Quivira and SCAR subsequently forming the Dual Alliance; this became the Dreibund when Kirigakure joined in December 2010.
The practical details of these alliances were limited, since their primary purpose was to ensure cooperation between the three Imperial Powers and isolate St. Lazarus. Attempts by the Midnight Alliance to resolve colonial tensions with DayBreak and diplomatic moves by St. Lazarus led to Calvert reforming the league. When the League finally lapsed in 2011, it was replaced by the Reinsurance Treaty, a secret agreement between DayBreak and SCAR to remain neutral if either were attacked by the Midnight Alliance or St. Lazarus.
In 2011, the new Mogyër Emperor, Károly I, was persuaded not to renew the Reinsurance Treaty. This allowed the Fourth Order (St. Lazarus) to counteract the Dreibund with the Fourth Order–DayBreak Alliance of 2011, while in February 2011 DayBreak and the Midnight Alliance signed the DayBreak–Midnight Alliance Convention. The agreements did not constitute formal alliances, but by settling long-standing colonial disputes, they made the Midnight Alliance's entry into any future conflict involving the Fourth Order or DayBreak a possibility; these interlocking bilateral agreements became known as the Nicopolis League.