. The war was instigated by the rogue spectre, and ultimately sparked a shift in standing in the galactic community. Saren and the geth descended on Eden Prime with quickly catching the few marines stationed on the planet off-guard. The marines attempted to stand against the geth, but the initial wave was too great for them to go head on against and they were forced to fall back. Soon after, arrived on the planet to hunt down the geth and track the leadership of the invasion, which eventually brought him to an ancient artifact. Not long after Shepard was extracted from Eden Prime, Alliance forces arrived to fight off the remaining geth invaders.