The Imperial Military is the overarching fighting force of the Galactic Empire, comprised of the Imperial Navy, Imperial Army, and the Stormtrooper legions, among various support branches such as the Imperial Starfighter Corps. It was responsible for carrying out military operations throughout the galaxy as well as maintaining order on Imperial member worlds, governorships, colonies, and protectorates.
The Imperial military came into existence in 19 BBY with the Declaration of a New Order and the founding of the Galactic Empire. The Galactic Republic military was turned, over night, into the Imperial military. The weaponry, technology, personnel and uniforms all remained the same. What did change was the ideology, mission and chain-of-command.
Over the years, the Imperial military became infamous for its efficiency, discipline and brutality: hundreds of star systems fell to the wrath of the Galactic Empire, and with them, the lives of hundreds of billions of sentient beings.
The Imperial military was watched on a constant basis by COMPNOR and its Imperial Security Bureau and CompForce observers, in order to keep the massive and powerful military in check in case of rebellion against the Emperor. The Stormtroopers fulfilled a similiar purpose, stationed aboard Imperial naval vessels and Army garrisons to serve as the fighting arm of the Emperor.
In 4 ABY, the military was splintered during the Post-Endor Imperial power struggle. For four years, its strength and efficiency would drop to near disastrous levels, until its revival in 8 ABY by Emperor Bacharan Valak.
Branches of the Imperial Military included: