On June 14th C.E. 70, ZAFT forces entered Lagrange Point 4 and laid siege to the resource asteroid Nova. While the initial battle broke out around the asteroid base, the fighting escalated to surrounding colonies. Eventually the civilian populations of these colonies had to be evacuated.
On July 12th, the defending Republic of East Asia forces retreated from Nova, ending the month-long siege with ZAFT successfully taking control of the asteroid base. After the battle, it was decided to move the asteroid to Lagrange Point 5, closer to PLANT homeland. During the transport, the Earth Alliance attempted to retake the asteroid, but were defeated by the ZAFT escort fleet, of which Miguel Aiman was part of. After Nova was moved to L5, the asteroid was converted into a space fortress and renamed Boaz.
Frustrated by their repeated defeat in the war, the Earth Alliance re-examined the G project proposed by Admiral Halberton as a mean to break the stalemate and gain an advantage over ZAFT. Soon the project is approved by the Alliance, and with the assistance of the Sahaku clan of Orb Union, work began on these top-secret weapons that Alliance hoped would reverse the course of the disastrous war.
