February 14th, CE70. Three days after Earth Alliance declared war on PLANT, an Alliance fleet entered Lagrange point 5 space to confront PLANT in February 14th with the aim to subdue the upstart coordinators.

However, the battle did not went in the favour of the Alliance as the attacking fleet suffered heavy losses. Facing with defeat and failing their strategic goal, Admiral William Sutherland onboard Alliance carrier Roosevelt ordered the Peacemaker Nuclear Task Force to launch, targeting the illegal agricultural colonies of PLANT. Intending to complete their mission of sabotaging PLANTs food production capability no matter what. A nuclear missile struck the illegal agricultural colony Junius Seven, shattering the colony to million pieces ina blinding flash, and took the lives of 243 721 people. This act turned the on-and-off skirmishes between ZAFT and Alliance into an all-out war.