Can you please find the sentence where the word praetorian guard occurs in the sentence Chapter 1?

All the way ... from his present rank right up to his father’s rank of First Cohort; and after that? For most of the men who got so far there was nothing after that, but for the outstanding few who went farther — as Marcus intended to go farther — the ways divided there. One could become a camp commandant, as Uncle Aquila had done, or one could go on, by way of the Praetorian Guard, to try for command of a Legion.