Decimus Junius Brutus Callaicus, born in the year one hundred eighty-one BC, was a prominent politician and military leader in the Roman Republic. He served as consul in one hundred thirty-eight BC alongside Publius Cornelius Scipio Nasica Serapio. As a member of the optimates, a political faction that championed the interests of the aristocracy, Brutus Callaicus was known for his staunch opposition to the plebeian tribunes and the populares, who sought reforms to aid the lower classes.
During his consulship, Brutus Callaicus and his colleague faced significant challenges from the plebeian tribunes. Notably, they were imprisoned by the tribune Gaius Curiatus for refusing to allow the selection of ten men exempt from military service. This incident highlighted the tensions between the aristocratic optimates and the representatives of the plebs, showcasing the political strife of the era.
In addition to his political career, Brutus Callaicus was an accomplished military commander, leading campaigns in Hispania and Illyria. His legacy continued through his family; he was the son of Marcus Junius Brutus, who served as consul in one hundred seventy-eight BC, and the brother of Marcus Junius Brutus, a praetor in eighty-eight BC. His lineage included a son, also named Decimus Junius Brutus, who became consul in seventy-seven BC, and a grandson, Decimus Junius Brutus Albinus.