The Militias are the pod pilot organizations that handle the war between the Empires. There are four militias; one for each of the major Empires.

The Amarrians and the Caldari are both in an alliance, as are the Minmatar and the Gallente.

Each of the four militias are compromised by many corporations that have volunteered to serve in their lines, as well as many independant pilots that serve directly under the banner of their militia. All of them engage each other in a certain set of systems who's ownership is contested between them. They are also banned from entering the high-security systems of the oposing two nations by the navies of those countries, while they are supported by their own nation's navies against the enemies in their own high-security systems.

For known corporations participating in this conflict check: Factional Warfare Corporations.