17.  Having thus restored prosperity once more to Rome, he again found himself under a necessity of going into Spain to oppose an army which had been raised there under the two sons of Pompey, and Labie’nus his former general. 18.  He proceeded in this expedition with his usual celerity, and arrived in Spain before the enemy thought him yet departed from Rome.  Cne’ius Pompey, and Sextus, Pompey’s sons, profiting by their unhappy father’s example, resolved, as much as possible, to protract the war; so that the first operations of the two armies were spent in sieges and fruitless attempts to surprise each other. 19.  However, Caesar, after taking many cities from the enemy, and pursuing his adversary with unwearied perseverance, at last compelled him to come to a battle upon the plain of Munda. 20.  Pompey drew up his men, by break of day, upon the declivity of a hill, with great exactness and order.  Caesar drew up likewise in the plains below; and after advancing a little way from his trenches, ordered his men to make a halt, expecting the enemy to come down from the hill.  This delay made Caesar’s soldiers begin to murmur; while Pompey’s with full vigour poured down upon them, and a dreadful conflict ensued. 21.  The first shock was so dreadful, that Caesar’s men, who had hitherto been used to conquer, now began to waver.  Caesar was never in so much danger as now; he threw himself several times into the very thickest of the battle.  “What,” cried he, “are you going to give up to a parcel of boys your general, who is grown grey in fighting at your head?” 22.  Upon this, his tenth legion exerted themselves with more than usual bravery; and a party of horse being detached by Labie’nus from the camp in pursuit of a body of Numid’ian cavalry, Caesar cried aloud that they were flying.  This cry instantly spread itself through both armies, exciting the one as much as it depressed the other. 23.  Now, therefore, the tenth legion pressed forward, and a total rout soon ensued.  Thirty thousand men were killed on Cne’ius Pompey’s side, and amongst them Labie’nus, whom Caesar ordered to be buried with the funeral honours of a general officer.  Cne’ius Pompey escaped with a few horsemen to the seaside; but finding his passage intercepted by Caesar’s lieutenant, he was obliged to seek for a retreat in an obscure cavern.  He was quickly discovered by some of Caesar’s troops, who presently cut off his head, and brought it to the conqueror.  His brother Sextus, however, concealed himself so well, that he escaped all pursuit; and afterwards, from his piracies, became noted and formidable to the people of Rome.