A number of officers, including Commander Alexis and other high-level authorities, did not support the war. Their reason was not one of morality or anything to do with righteousness. After all, an army of bandits did not need a reason to attack a planet or system.
However, attacking without calculating the risk and consequences is a fool's errand. The Federation was strong, and there was a strong possibility that even the entire Valsalrian Army combined would not be able to fully dominate them.
Even if they did manage to conquer every territory and completely decimate the Federation, doing so would leave the Valsarian Army weakened, giving other forces in the universe that hated them a golden opportunity to attack.
