Julius Caesar fights Titus Labienus in the Battle of Ruspina.

Gaius Julius Caesar was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war. He subsequently became dictator from 49 BC until his assassination in 44 BC. Caesar played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire.

Titus Labienus was a high-ranking military officer in the late Roman Republic. He served as tribune of the Plebs in 63 BC. Although mostly remembered as one of Julius Caesar's best lieutenants in Gaul and mentioned frequently in the accounts of his military campaigns, Labienus chose to oppose him during the Civil War and was killed at Munda. He was the father of Quintus Labienus.

The Battle of Ruspina was fought on 4 January 46 BC in the Roman province of Africa, between the Republican forces of the Optimates and forces loyal to Julius Caesar. The Republican army was commanded by Titus Labienus, Caesar's former lieutenant during the Gallic Wars who had defected to the Republican side at the beginning of the civil war.

January 4 is the fourth day of the year in the Gregorian calendar; 361 days remain until the end of the year.