The Battle of Templaria started 1232 years after the beginning of The War for All.
The Seekers noted the large number of elite starfighters being produced by the nation Templaria. They decided to attack the nation to prevent the creation of these starfighters. The battle started with a wormhole being created which lead directly to the andromeda I galaxy.
The Templars knew they had no way of actually defeating the Seekers, so instead, they resorted to guerilla tactics. They utilized their starfighters and production capabilities to resist the invasion of the Seekers. The Templars were able to resist the invasion for about 10 years before the Seekers managed to fully infiltrate the galaxy. Within another 10 years, the Templars lost around half of the galaxy.
This made the Templars evacuate every remaining major world in the galaxy. As robots, they were able to dp this incredibly efficiently. Several million Templars left the galaxy entirely, but the vast majority remained to fight against the Seekers.
The Templars that left the galaxy, fled to intergalactic space about 100 million lightyears from the milky way into a void. There, they waited until a physical Templarian ship were to tell them to come back, or 10000 tears would pass, whichever one came first.
The Seekers controlled the entire galaxy for the vast majority of the Battle of Templaria. This battle was mostly a guerilla offensive of Templars trying to be as troublesome as possible for the Seekers. The Seekers controlled almost every world in the Andromeda I galaxy but this did not stop small groups of Templars from fighting back.
The Templars remaining in the galaxy managed to survive but were barely managing to maintain several mobile fleets. Over three quadrillion Templars were completely cut off from outside communication, so they hunted harvester ships in groups of one to seven starfighters.
The Templars were able to survive only because Templarian starfighters are very good. They outclass almost any drone or human starfighter in the universe. They were able to pick off small amounts of drones, and to overall be a nuisance to The Seekers. The starfighters were not perfect, only being able to handle one or two drones by themselves, but they were still excellent.
The strategy of picking off lone ships or drones was mildly effective and did result in a large number of casualties for the Seekers, but it also caused The Templars to lose many troops over time. By 190000, the Templars had only about ten million starfighters left in the galaxy. Even if they were in small numbers, they still continued to fight valiantly. By the end of the war, only several hundred starfighters remained in the galaxy.