The Empire has found that its ingenuity and ability to adapt is its greatest weapon against a world filled with monstrous beasts and supernatural evils. The School of Engineers is responsible for some of the more creative guns and war machines, such as the Helblaster Volley Gun. Their steel armor and swords, combined with their black powder and advanced tactics, allow them to stand toe-to-toe with some of the nastiest things in the Warhammer universe.
Politically, the Empire is led by an Emperor. Beneath him are a collection of loose states, each under the command of an Elector Count. In times of peace (which is about never in the Warhammer world), these states are political rivals fighting over trade routes or land rights. But when threatened, the Emperor unites the Counts to defend the Empire. There are also Knightly Orders that are called upon by an Elector Count to fight for the Empire. Knights are great assets, adding the benefits of heavy cavalry to your army.