Yavin blockade

The Blockade of Yavin was a military action of the Galactic Empire after the destruction of the Death Star in 0 BBY. Darth Vader led a fleet that sorrounded the system to defeat the Core Group of the Rebel Alliance. The blockade was so extensive, it covered the entire sector. Though it was a large blockade, small ships could escape, while the large transports and capital ships couldn't.

Luke Skywalker, Princess Leia Organa, and Han Solo have manage to escape the blockade multiple times. Once to the Wheel, to Hoth, and other planets.

Baron Orman Tagge used his vast resources of TaggeCo to develop weapons to defeat the Alliance at Yavin. The first was a station in the planet of Yavin that carried a turbine to allow fighters through. TIE Fighters used this station as depot that allowed them to have continous seige of Yavin IV. This station was destroyed by Luke Skywalker.

The second attempt used a new freezing bomb weapon. Han Solo led a Rebel Fleet through an unknown gap of the Imperial Fleet. Luke Skywalker managed to relocate the bomb, and the Rebel Fleet attack Orman Tagge's fleet and led to his defeat.

The Empire also led strikes on Yavin IV, called the Skirmishes of Yavin IV. This involved killing High Command of Bothans, Destroying an escaping Rebel Fleet, and multiple raids on the Massassi Temple.

In 2 ABY, The Alliance began evacuating the base and relocate to Hoth, on Luke Skywalker's advice. The Alliance ecaped the Imperial might and spent a year relocating to Hoth and building Echo Base.