Ancient Rome: The Rise and Fall of an Empire - Season 1 Episode 1 -

At the close of the Gallic Wars, Gaius Julius Caesar finds his army encircled by a massive force of Gauls but wins a decisive victory with a brilliant counterattack at the Battle of Alesia. An inspiring speech to his troops, promising to rescue Rome from its corrupt rulers and restore it to its people, raises opposition from Senators Cato and Marcellus. Caesar refuses to disband his army before crossing the Rubicon, plunging the Republic into civil war and turning his deputy Labienus and old friend Pompey against him. Caesar captures Rome unopposed after Pompey is forced to withdraw his vastly outnumbered legions and the senators and people flee.