1. The Battle of Pharsalus was a decisive battle of Caesar's Civil War.

2. The Battle of Pharsalus ended the wars of the First Triumvirate.

3. Pompey fled from Pharsalus to Egypt, where he was assassinated on the order of Pharaoh Ptolemy XIII.

4. The movie opens shortly after the Battle of Pharsalus where Julius Caesar (Rex Harrison) has defeated Pompey.

5. I actually wrote my dissertation (2004) on the subject, and before entering into the realms of Political Theory spent a vast amount of time researching various elements of the Pharsalus campaign.