legate of M. Cicero during his government in Cilicia, B. C. 51. Anneius appears to have had some pecuniary dealings with the inhabitants of Sardis, and Cicero gave him a letter of introduction to the praetor Thermus, that the latter might assist him in the matter. In Cicero's campaign against the Parthians in B. C. 50, Anneius commanded part of the Roman troops. (Cic. Fam. 13.55, 57, 15.4.)