The massive invasion of the Fallen Apostles began yesterday and has already lasted nearly two days. For conventional civilizations, an interstellar battle may take longer; if it's a civilization that has just mastered interstellar navigation, they might need days or even months to complete a battle: the navigation of ships, the occupation and construction of space outposts, fleet supply, and local battlefield adjustments all require time. Low-level civilizations will spend much more time on these than the exchange of fire between their spaceships.
But for a civilization like the Xyrin Empire... the pace of war is faster, so fast that it's hard to grasp.
