Actually, the Circle of Ouroborous and their Time Corps would take on all comers and not even flinch. With the oldest human in the galaxy (Lazarus Long), the incomparable Hilda Mae Burroughs Long, and Jubal Harshaw on strategy, along with Mycroft Holmes IV and Pallas Athene Long operating the Supersnooperscope, no one stands a chance. If they don't like the way a battle is turning out they will send a Time Corps agent back to edit someone vital to the enemy's victory out of the picture.