Star Wars Fan Film - Rebel Alliance vs Empire

The Alliance to Restore the Republic (2 BBY–4 ABY), commonly known as the Rebel Alliance, Alliance, the Rebellion, and rarely the Separatists, was a resistance movement formed by Bail Prestor Organa and Mon Mothma to oppose the reign of the Galactic Empire. The Alliance was formed from a less organized movement to oppose the Empire that existed, which was secretly led by Organa. This early group came together from a number of rebel cells, including the crew of the Ghost and the Phoenix Cell. The Atrivis Resistance Group was one of the first cells to join what Mothma began calling "the Alliance" before the formal formation of the Alliance to Restore the Republic. The Alliance was publicly and formally declared with the Declaration of the Rebel Alliance.

The Galactic Empire, also known as the First Galactic Empire, the Empire and later as the Old Empire, was the fascist dictatorship that replaced the Galactic Republic at the end of the Clone Wars. Though the Empire rose to power by promising to bring order to the galaxy, it oversaw a period of harsh military rule and aggressive expansion. The subsequent Imperial Era would last only two decades, for it was eventually overthrown by the Alliance to Restore the Republic in the Galactic Civil War, but not before the sovereign star systems of the galaxy had been largely conquered and oppressed by the Empire's forces.