World on Fire was a Clan Wars event during May 2014 in which Clans could compete for Victory Points in order to win Gold prizes and achievements, and players could earn Fame Points in order to be the first to get T23E3 American Medium tanks on the North America servers.
The Second Campaign consisted of three different stages. To win, clans had to earn the most Victory Points. Clan members could earn Fame Points and receive special medals for achieving certain goals within each stage, including defeating the Wargaming Clan. The main prize of the Second Campaign was the VK 72.01 tank.
The First Campaign consisted of four different stages, each with its own name, specific rules and winner. Vehicles of all Tiers were used. Clans had the chance to prove their worth on the Global Map. Clans that performed well on the Global Map received a special Tier X Medium Tank that could not be researched in game.