The Rest Is History
The Rest Is History

Roman Civil War: Marching on the Senate (Part 3)

September 6, 2026

AI Summary

5 min read

The Unthinkable Step: When a Roman General First Marched on Rome

In 88 BC, a Roman commander did something no one had ever done before: he led his army against his own capital city. The Greek historian Appian records that when Sulla's senior officers met him on the road and asked why he was marching with his legions against Rome itself, he answered simply: "To deliver her from tyrants." This was the moment the Roman Republic began its long slide toward empire.

The Rivalry That Broke the Republic

The crisis grew from a venomous rivalry between two men. Gaius Marius, the old bruiser from a provincial background who had clawed his way to six consulships, and Lucius Cornelius Sulla, his former lieutenant—younger, patrician, ruthlessly ambitious. Sulla had just been voted consul and awarded the command against Mithridates, the king of Pontus who had invaded Rome's Asian provinces. The command promised enormous riches and glory, and Sulla's soldiers were desperate for it.

While Sulla was away besieging the town of Nola, Marius saw his chance. He teamed up with a tribune named Sulpicius, who presented a bill stripping Sulla of his command and giving it to Marius. The plebiscite passed. Marius sent a staff officer to take command of Sulla's army.

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What you'll learn

  • 1 (02:49) **Sulla Learns He Has Been Replaced** - The consul Sulla is informed that the tribune Sulpicius and his old rival Marius have stripped him of his command against King Mithridates and given it to Marius.
  • 2 (04:29) **The Unthinkable Decision to March on Rome** - The hosts frame this as a monumental, fateful step: the first time a Roman general has ever led an army against the capital itself.
  • 3 (10:06) **Why Marius Never Saw It Coming** - Marius sends a staff officer to take command of Sulla’s army, apparently blind to the danger of cornering a man with six legions at his back.
  • 4 (14:24) **Was Sulla’s Coup Inevitable?** - The hosts debate whether this was a product of Sulla’s individual genius or of structural decay in Roman politics.
  • 5 (16:35) **The March into Rome** - Sulla’s legions cross the sacred boundary (the pomerium) and push through the narrow streets as horrified citizens hurl roof tiles down on them.
  • 6 (18:40) **Sulla Seizes Legitimacy** - Sulla moves fast to frame his coup as a defense of the Republic, forcing the Senate to declare Marius, Sulpicius, and ten others outlaws.
  • 7 (20:39) **The Conservative Revolutionary** - Sulla is a revolutionary in the cause of the status quo, appealing to senatorial conservatives who resent Marius’s populism.

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Show Notes

What shocking, unprecedented act did Sulla commit with his legions after having his ambitions frustrated once more by his bitter rival, the tribune Marius? How did Marius escape capture and death? And, would Marius retaliate…?


Join Tom and Dominic as they unfold the mounting rivalry between two Roman generals - Marius and Sulla - as they battle for ultimate control of the empire, and Sulla takes a fateful step that will change the fate of the Republic forever….  


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Video Editors: Jack Meek, Harry Swan + Adam Thornton 

Social Producer: Harry Balden

Producers: Tabby Syrett & Aaliyah Akude 

Senior Producer: Callum Hill  

Executive Producer: Dom Johnson

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