|Battle of New Buenos Aires|
Mobile Infantry troopers in Powered Suits.
|Terran Federation Force||Extraterrestrial life form|
|More than one million||Invasion force completely destroyed|
An alien force infiltrated the passenger ship Queen Alexandra before its arrival on Earth. After the Queen Alexandra arrived at New Buenos Aires Spaceport, the alien Warriors launched an anti-human offensive, starting with the space port. The Terran Federation dispatched the Mobile Infantry to engage the enemies.
After the battle, the Terran Federation declared the War on the aliens, starting the Space War. The training schedule of Mobile Infantry trainees was also affected by the incident.