the league, as well as for the character of Archon and Polybius, that they were elected, apparently in the same assembly, the one Strategus and the other Hipparch for the year B.C. 169-168.[17] In this office Polybius doubtless hoped to carry out the principles and discipline of Philopoemen, under whom he had probably served in the cavalry, and whose management of this branch of the service he had at any rate minutely studied.[18] But there was little occasion for the use of the Achaean cavalry in his year. Being sent on a mission to Q. Marcius Philippus at Heracleia to offer the league’s assistance in the war with Perseus, when their help was declined, he remained behind after the other ambassadors had returned, to witness the campaign.[19] After spending some time in the Roman camp, he was sent by Q. Marcius to prevent the Achaeans from consenting to supply five thousand men to Appius Claudius Cento in Epirus. This was a matter of considerable delicacy. He had to choose between offending one or the other powerful Roman. But he conducted the affair with prudence, and on the lines he had always laid down, those, namely, of strict legality. He found the Achaean assembly in session at Sicyon; and he carried his point by representing that the demand of Appius Claudius did not bear on the face of it the order of the Senate, without which they were prohibited from supplying the requisitions of Roman commanders.[20] He thus did not betray that he was acting on the instigation of Quintus Marcius, and put himself and the league in an attitude of loyalty toward the Senate.[21] In the same cautious spirit he avoided another complication. Certain complimentary statues or inscriptions had been put up in various cities of the league in honour of Eumenes, king of Pergamus, and on some offence arising had been taken down. This seems to have annoyed Eumenes exceedingly; and Polybius persuaded the people that it had been ordered by Sosigenes and Diopeithes, as judges, from feelings of personal spite, and without any act of Eumenes unfriendly to the league. He carried his point, and thus avoided offending a king who at that time was on very friendly terms with Rome.[22] But while thus minded to avoid unnecessary offence, Polybius and his party were in favour of strengthening the league by alliances which could be entered upon with safety. Egypt at this time was under the joint government of two Ptolemies, Philometor and Physcon, who were being threatened with an invasion by Antiochus Epiphanes. The friendship of the league with the kings of Egypt had been of long standing, as far back as the time of Aratus; and though that friendship had been afterwards interrupted by the Macedonian policy of Aratus, just before his death the father of these kings had presented the league with ten ships and a sum of money. The two kings now sent to beg for aid; and asked that Lycortas should come as commander-in-chief, and Polybius as hipparch.