Use "in the saddle" in a sentence

1. 3 After the death of Julius Caesar, his adopted son, Gaius Octavius, adroitly suppressed the power of the Roman senate, skillfully changed the image of the Republic to that of an empire, and finally seated himself securely in the saddle as Rome’s first emperor.

3 Après la mort de Jules César, Caïus Octavius, son fils adoptif, supprima adroitement la puissance du Sénat romain, transforma la république en un empire et, finalement, s’installa solidement au pouvoir comme premier empereur de Rome.