The Resistance Military Center is a habitable planet in an unknown star system, inside the Milky Way Galaxy. It serves as the military center of the Resistance, an interstellar military union humanity is not only part of, but has leadership status within.
After being defeated by the Harvester Empire, the Sphere's species and many other have retreated to a previously uninhabited (but habitable) planet in an unknown system within the Milky Way, whose location continues to be secure.
The new colonists established this planet at first as a refuge, and then as the military center for the newly formed Resistance. It remained the Resistance's capital until humanity assumed leadership of the union.