Resilience
The Red Planet, Mars.
Named after the Roman god of war, it was the fourth among all the planets in Gaea's solar system. And true to its namesake, humanity had made it their primary military base and the heart of their military might.
Thanks to Sol being mostly enclosed by Helios, its solar winds could no longer wreck havoc on the planet, and this allowed its frozen waters to melt. Humanity helped Mars' redevelopment along by terraforming it purposefully and restored its atmosphere as it used to be countless millennia ago.
This covered half of Mars with an ocean of water, where its crystalline blue was a strong contrast to its reddened, oxidized earth.
Littered everywhere on the surface were multiple bases and training yards, while the planet itself was surrounded by a half dozen orbital yards.