The First Battle of Earth, more-commonly known as the Fall of Earth, was one of the costliest engagements of the Der'kal Invasion, and marked the formal turning point at which the Der'kal Empire ceased outward expansion, instead deciding to consolidate its vast territories around the galaxy. It was also the first time in history since the golden age of the System Lords that Earth was conquered by an alien power, shattering the long-held notion that the planet was all but invincible. Aside from dissolving the United Nations and effectively taking the Tau'ri out of the war, the battle served to illustrate the strategic prowess of the alien tactician Lor'al, elevating her to unparalleled levels of respect amongst the Der'kal.