In theory, the lord could force his vassals to settle their disputes in an orderly and righteous manner before his court. But often he was neither able nor inclined to bring about a peaceful adjustment, and he would frequently have found it embarrassing to enforce the decisions of his own court. So the vassals were left to fight out their quarrels among themselves and found their chief interest in life in so doing. War was practically sanctioned by law. The great French code of laws of the thirteenth century and the Golden Bull, a most important body of law drawn up for Germany in 1356, did not prohibit neighborhood war, but merely provided that it should be conducted in a decent and gentlemanly way. [Sidenote: Tourneys and jousts.] The jousts, or tourneys, were military exercises--play wars--to fill out the tiresome periods which occasionally intervened between real wars.[72] They were, in fact, diminutive battles in which whole troops of hostile nobles sometimes took part. These rough plays called down the condemnation of the popes and councils, and even of the kings. The latter, however, were too fond of the sport themselves not to forget promptly their own prohibitions.[73] [Sidenote: Disastrous effects of feudal warfare generally recognized.] [Sidenote: The 'Truce of God.'] 45. The disastrous nature of the perpetual feudal warfare and the necessity of some degree of peace and order, had already become apparent even as early as the eleventh century. In spite of all the turmoil, mankind was making progress. Commerce and enlightenment were increasing in the older towns and preparing the way for the development of new ones. Those engaged in peaceful pursuits could not but find the prevailing disorder intolerable. The Church was untiring, as it was fitting that it should be, in its efforts to secure peace; and nothing redounds more to the honor of the bishops than the "Truce of God." This prohibited all hostilities from Thursday night until Monday morning, as well as upon all of the numerous fast days.[74] The church councils and the bishops required the feudal lords to take an oath to observe the weekly truce, and, by means of the dreaded penalty of excommunication, met with some success. With the opening of the Crusades in 1096, the popes undertook to effect a general pacification by diverting the prevailing warlike spirit against the Turks.