sentences:  The murderers panicked and fled to Greece.In Caesar's will, his grandnephew Octavianus, who also was the adopted son of Caesar, was named as his political heir.Octavian returned from Apollonia (where he and his friends Marcus Vipsanius Agrippa and Gaius Maecenas had been studying and helping in the gathering of the Macedonian legions for the planned invasion of Parthia) and raised a small army from among Caesar's veterans.