Gaius Sulpicius Gallus or Galus was a general, statesman and orator of the Roman Republic. Under Lucius Aemilius Paulus, his intimate friend, he commanded the 2nd legion in the campaign against Perseus, king of Macedonia, and gained great reputation for having predicted an eclipse of the moon on the night before the Battle of Pydna (168 BC). Gallus was a man of great learning, an excellent Greek scholar, and in his later years devoted himself to the study of astronomy, on which subject he is quoted as an authority by Pliny. The lunar crater Sulpicius Gallus is named after him.