Siege of Augustgrad (Emperor's Fall)

The Siege of Augustgrad was perhaps the biggest battle between the Dominion and the United Earth Directorate, which ended with the collapse of the Terran Dominion in its own capital, Korhal IV.

History
After achieving one of the objectives (destroying Mengsk's physics labs or nuclear silos) the Dominion counterattacked with its remaining resources. The UED forces weathered the counterattack and made their advance to Augustgrad, the capital city of Korhal.

However, although the UED forces were outnumbered, the skills and forces of a UED captain could relatively easily destroy the most powerful Dominion defenses and destroy Mengsk's palace. Mengsk tried to flee in his flagship, the Norad III, when he was intercepted by DuGalle's own flagship, the Aleksander. Mengsk prepared to surrender in exchange for his life, but DuGalle said he would arrest and publicly execute Mengsk and his ranking officers.

A small protoss fleet, along with the battlecruiser Hyperion appeared and opened communications with Mengsk. Mengsk was very surprised, but Hyperion commander Jim Raynor told him he was being rescued. The protoss warped Raynor and Mengsk out of the reach of the UED.