Chaos

Founding and Early History
Founded ever since the dawn of this universe, Chaos is the equal and opposite of Order, and stands for the opposite of whatever the government of Rhineland and state worship of Anglyas believes in. Before Chaos had a chance to step foot into this dimensional plane of existence, it's host used to be composed of the individual four Chaos Gods: Khorne, Nurgle, Slaanesh, and Tzeentch, as well as their servant daemons along with other native denizens of the Warp.

Ever since the gates between the physical and the immaterial have been breached in the later months of 1914, Chaos has been growing its numbers from a variety of mortals who have pledged allegiance to it, ranging from those citizens who are focused on growing the economy, leaders with political agendas, military members who bring their training and equipment to use, Psykers who have finally succumb to the siren call of Chaotic power and even those genius inventors who are dissatisfied with how the Tech Union manages technology.

Goals
The ultimate goal of being aligned with Chaos is to bring down Order, no matter which Chaos god he or she serves. Once a being has pledged loyalty and allegiance to a particular god, their soul is as good as their master's and will be no more than just a tool for said Chaos god when the being perishes. In other words: Once you turn to Chaos, you cannot turn ever again.

Internal Strife
Fortunately enough for those serving Order, the force of Chaos are not impervious to their own nature: With four Chaos Gods vying to overthrow Order as well as each other, some internal strife can be expected.