Agrippa

Agrippa commanded the fleet of Octavian against the combined forces of Mark Antony and Cleopatra. His tactical victory at Actium ended the Roman civil wars and secured Octavian's sole rule, leading to the establishment of the Roman Empire.

Agrippa commissioned the original Pantheon in Rome, a temple dedicated to all gods. The building was later rebuilt by Hadrian but retained Agrippa's inscription, becoming a landmark of Roman architecture.

Augustus granted Agrippa proconsular imperium over the eastern provinces, effectively making him co-ruler. Agrippa administered the region, settled disputes, and strengthened Roman control, demonstrating his role as Augustus's heir apparent.