Sora, an ancient Volscian town, was thrice captured by the Romans, in 345, 314, and 305 BCE, before they managed, in 303, by means of a colony 4,000 strong, to confirm its annexation as a Latin colony. In 209, it was one of the colonies that refused further contributions to the war against Hannibal. By the lex Julia, it became a municipium, but under Augustus, it was colonized by soldiers of the legio IV Sorana, which had been mainly enrolled there.