There are currently eight major battling factions in the Warhammer 40,000 universe, each with a multitude of sub-factions, clans or chapters which can form the base of an army. With this knowledge, you can make an informed decision about which army to choose on your new path. In this guide, you will learn about the major factions, their motivations, and get a strengths and weaknesses. The Warhammer 40,000 universe is filled with a wide variety of armies and factions that can appeal to any type of player.