Pynchon, in Gravity's Rainbow, offers some excellent mottos for the new/old imperial Space Force. To name a few:

"All the animals, the plants, the minerals, even other kinds of men, are being broken and reassembled every day, to preserve an elite few, who are the loudest to theorize on freedom, but the least free of all."

"Don't forget the real business of war is buying and selling."

"Shit, money, and the Word, the three American truths, powering the American mobility..."

"My mother is the war."

"The Toiletship"