Years passed as the galaxy continued to burn under the onslaught of the Naraku. Or at least large swaths of the Galaxy. The bugs had completely and totally given up on the idea of assaulting the Germanic sector of space. And instead continued to press against the other four major powers.
Gains against the Alfheim Dominion and the Svartalfheim Federation were limited. Or at least relatively so when compared to ground taken against the Asuran Cabal, and the Ennead Theocracy.
Eventually, the time came where Erich could no longer pretend like his Navy was still undergoing repairs. And because of this, he sent a small number of ships to aid his allies in their efforts to stem the tide.
He was able to convince the other galactic leaders that it was extremely necessary for him to keep "half" of his naval forces in reserve in case the Naraku showed up back at his borders. And was instead forced to split the other half among the four allies.