Gaius Cassius Longinus / 卡西乌斯

Overview

Gaius Cassius Longinus / 卡西乌斯 is a principal organizer of the Caesar conspiracy and later eastern commander whose defeat and premature suicide at Philippi help destroy the republican military coalition.

Current Profile

The Caesar source presents Cassius as an active opponent of Caesar’s dictatorship who understands that the plot requires Marcus Brutus / 马库斯·布鲁图斯’s symbolic authority. He embodies its practical organization—recruitment, timing, secrecy, and public framing—while remaining morally mixed through ambition, rivalry, and fear.

305: The Fall of the Roman Republic extends that organizing capacity into civil war. Cassius and Brutus raise money and approximately twenty legions in the East, add cavalry and mounted archers, and establish a strong position near Philippi. Antony defeats Cassius’s wing while Brutus succeeds against Octavian’s. Before learning of that success, Cassius kills himself; the episode treats the information failure as a potentially decisive turn in the campaign.

Key Characteristics

• Practical organizer who gives operational structure to the anti-Caesar plot.
• Depends on Brutus’s republican name to legitimate the conspiracy publicly.
• Converts exile and provincial access into a large eastern army and supply position.
• Shares responsibility for coercion and atrocity within the liberator coalition.
• Dies after local defeat without knowing that Brutus has won elsewhere.

Evidence

• Conspiracy role: 124. 恺撒之死：历史的韵脚，是否已失效？ presents Cassius as early organizer and recruiter who needs Brutus’s authority.
• Eastern mobilization: 305: The Fall of the Roman Republic describes fundraising, troop formation, cavalry, archers, and the fortified Philippi position.
• Defeat and death: 305: The Fall of the Roman Republic says Antony defeats Cassius’s forces and Cassius dies before receiving accurate news of Brutus’s wing.

Qualifications

The current sources do not provide a full biography or independently settle Cassius’s motives. Troop totals, the scale of liberator atrocities, battlefield communications, and the counterfactual claim that his suicide decided the war remain source-scoped.

What Changed

• Extended Cassius from assassination organizer into eastern war organizer and Philippi commander.
• Added the information failure surrounding his suicide as a qualified possible turning point.

Relationships

• Assassination of Julius Caesar / 恺撒遇刺 - conspiracy he helps organize.
• Marcus Brutus / 马库斯·布鲁图斯 - partner whose name legitimates the plot and whose wing initially succeeds at Philippi.
• Julius Caesar / 尤利乌斯·恺撒 - target of the conspiracy.
• Mark Antony / 马克·安东尼 - opposing commander who defeats Cassius’s wing.
• Battle of Philippi / 腓立比战役 - final campaign and site of Cassius’s death.
• Tyrannicide Republican Dilemma / 弑君式共和困境 - problem of organized killing without a viable restoration settlement.