January 10-11, 49 B.C. Faced with the intransigence of the Senate, Caesar and the 13th Legion cross the Rubicon, the official border between Gaul and Italy, a decision that will lead to civil war.

Once Caesar crossed the Rubicon, there was no turning back. The die was cast. Since then, crossing the Rubicon has become an idiom signifying a point of no return. On January 28, M23, the armed ...

Gaius Julius Caesar is marching southbound to the river Rubicon with an army. He pauses. To cross this river and move into Italy would amount to insurrection. Treason against the republic.