Commentarii de Bello Civili (Commentaries on the Civil War), or Bellum Civile, is an account written by Julius Caesar of his war against Gnaeus Pompeius and the Senate. Shorter than its counterpart on the Gallic War, only three books long, and possibly unfinished, it covers the events of 49-48 BC, from shortly before Caesar's invasion of Italy to Pompey's defeat at the Battle of Pharsalus and flight to Egypt with Caesar in pursuit. It closes with Pompey assassinated, Caesar attempting to mediate rival claims to the Egyptian throne, and the beginning of the Alexandrian War.