The work describes the gonfalons, or battle flags,[2] collected from the field after the Battle of Grunwald in 1410 AD. This battle was a major confrontation between the Teutonic Order and the allied forces of Poles and Lithuanians, whom the Order was trying to conquer. At that time, the Order had succeeded in subjecting or eliminating the western Balts, including the Prussians; however, the Teutonic Knights were decisively defeated by the joint forces of the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania under the command of the Polish King Władysław II Jagiełło.