He wished to once and for all destroy his enemy.
These once destroyed, all the other fruits of victory followed.
During the course of the war, his pharmacy was destroyed once, but he immediately built it up again.
He once destroyed an entire constellation just for the sake of it.
But once destroyed, it had learned, they were gone.
He and his followers had been destroyed once in the fullness of time.
However, once destroyed the school can never be replaced.
"It cannot be easy for him to accept that he has become what he once destroyed."
Once destroyed, they do not bother that race again.
Once destroyed engineers can repair guns and they will fire on the enemy.