In 1488[23] a new instrument was devised for the enforcement of the Landfriede. The private feuds, so frequent and so ruinous in mediaeval times, were now falling into disuse, but only because the general unrest took larger forms. Leagues and Unions superseded the looser ties of warlike neighbours, and whole districts became involved in the settlement of some contemptible quarrel. The Swiss Confederacy was in reality a development of this system of Leagues, its primary object being protection against the House of Hapsburg. Every access of strength on the part of the Swiss, and especially the prestige which their triumph over Charles the Bold had won them, tended to weaken the Hapsburg influence in Swabia, the cradle of their race, and their mainstay in the Empire. Thus, when in 1486 the Bavarian Dukes directly infringed the Landfriede by their seizure of Regensburg,[24] the moment seemed favourable for some fresh organization, which should preserve the peace of the Empire and at the same time restore the {19} waning Hapsburg power in Swabia. In July 1487 an invitation was issued in the name of Frederick and Maximilian to all the nobles, knights, prelates and cities of Swabia, to a meeting at Esslingen. This step resulted in the formation of the famous Swabian League. Though really a development of the League of St. George's Shield, whose captain, Count Hugo von Werdenberg, was the chief originator of the scheme, it differed from it by extending its membership from the ranks of the nobles of all orders and classes of the Empire. A confederate Council and Court of Justice were instituted, and expenses were allotted for the raising of an army of 12,000 foot and 1,200 horse. A decisive influence was preserved to the Emperor, and the League was further strengthened by the adhesion of such princes as Sigismund of Tyrol, Eberhard of Würtemberg, and the Electors of Mainz and Trier. The Swabian League remained for many years a leading factor in German affairs. Though it widened the gulf between the Swiss and the members of the Empire (and thus no doubt was partly responsible for the Swiss war of ten years later), it also checked the gradual drifting of single towns from the Imperial to the Swiss system. And still more, it gave the Hapsburgs a strong weapon of defence against the House of Wittelsbach, whose aggressive policy might, without it, have proved entirely successful.