We must take care not to confound this strictly military force, serving, whether by virtue of tenure or engagement, wheresoever it should be called, with that of a more domestic and defensive character to which alone the name of militia was usually applied. By the Anglo-Saxon laws, or rather by one of the primary and indispensable conditions of political society, every freeholder, if not every freeman, was bound to defend his country against hostile invasion. It appears that the alderman or earl, while those titles continued to imply the government of a county, was the proper commander of this militia. Henry II., in order to render it more effective in cases of emergency, and perhaps with a view to extend its service, enacted, by consent of parliament, that every freeman, according to the value of his estate or movables, should hold himself constantly furnished with suitable arms and equipments.[217] By the statute of Winchester, in the 13th year of Edward I., these provisions were enforced and extended. Every man, between the ages of fifteen and sixty, was to be assessed, and sworn to keep armour according to the value of his lands and goods; for fifteen pounds and upwards in rent, or forty marks in goods, a hauberk, an iron breastplate, a sword, a knife, and a horse; for smaller property, less expensive arms. A view of this armour was to be taken twice in the year, by constables chosen in every hundred.[218] These regulations appear by the context of the whole statute to have more immediate regard to the preservation of internal peace, by suppressing tumults and arresting robbers, than to the actual defence of the realm against hostile invasion; a danger not at that time very imminent. The sheriff, as chief conservator of public peace and minister of the law, had always possessed the right of summoning the _posse comitatûs_; that is, of calling on all the king's liege subjects within his jurisdiction for assistance, in case of any rebellion or tumultuous rising, or when bands of robbers infested the public ways, or when, as occurred very frequently, the execution of legal process was forcibly obstructed. It seems to have been in the policy of that wise prince, to whom we are indebted for so many signal improvements in our law, to give a more effective and permanent energy to this power of the sheriff. The provisions, however, of the statute of Winton, so far as they obliged every proprietor to possess suitable arms, were of course applicable to national defence. In seasons of public danger, threatening invasion from the side of Scotland or France, it became customary to issue commissions of array, empowering those to whom they were addressed to muster and train all men capable of bearing arms in the counties to which their commission extended, and hold them in readiness to defend the kingdom. The earliest of these commissions that I find in Rymer is of 1324, and the latest of 1557.