*The manipular legion.* How long the phalanx organization was maintained we do not know: at any rate it did not survive the Samnite wars. In its place appeared the legionary formation, in which the largest unit was the legion of about four thousand infantry, divided into maniples of one hundred and twenty (or sixty) men, each capable of manœuvering independently. This arrangement admitted of increased flexibility of movement in broken country, and of the adoption of the _pilum_, or javelin, as a missile weapon. Both the _pilum_ and the _scutum_, or oblong shield, were of Samnite origin. While reorganizing their infantry, the Romans strengthened the _equites_ and developed them as a real cavalry force. Apparently property qualifications no longer counted for much in the army organization, as the men were assigned to their places in the ranks on the basis of age and experience, and the state furnished the necessary weapons to those who did not provide their own. By the third century, all able-bodied men holding property valued at 4000 asses were regularly called upon for military service. The others were liable to naval service, but only in cases of great need were they enrolled in the legions. Ordinarily, the service required amounted to sixteen campaigns in the infantry and ten in the cavalry. The field army was raised from those between seventeen and forty-six years of age: those forty-six and over were liable only for garrison duty in the city. The regular annual levy consisted of four legions, besides 1800 cavalry. This number could be increased at need, and the Roman forces in the field were supplemented by at least an equal number in the contingents from the Italian allies.