Earth Force was established on Earth in the late 22nd century to unify countries and agencies for space ventures. Initially, we colonized the Moon and Mars, followed by mining colonies on the moons of Jupiter, Saturn, and Neptune. We also set up remote stations in the Astro-Belt for mineral mining to enhance space flight and weapons.

When Earth expanded beyond our solar system and colonized Aldavian2 and Aldavian4, we encountered unknown aliens claiming the Aldavian system. The identity and origin of the aliens remain unclear. However, they retreated to what is now known as the Perseus Triangle after a confrontation. This led to the adoption of the Earth Force Charter for the military defense of our colonies and space stations.

Subsequently, we made contact with the world Andromen, establishing friendly relations and becoming allies. This relationship extended to another world called Caritian. In 2275, the current Earth Force Charter was established to include worlds with peaceful intentions, aiming to ensure peace throughout the galaxy. The phrase “Strength In Unity, and Power In Belief” was then added to the Shield.