His first objective was the strategic lakeside town of Morat, set on the eastern shore of Lake Morat. On 11 June 1476, the Burgundians commenced the siege of the well-prepared town, whose forces were commanded by the Bernese general Adrian von Bubenberg. An initial assault was repulsed by a heavy barrage of fire from light guns mounted on the walls, but two great bombards used by the Burgundians were slowly reducing the walls to rubble. By 19 June the Confederate muster was near complete at their camp behind the Sarine (Saane) River. Only a contingent of some 4,000 men from Zürich had yet to arrive and these were not expected until 22 June.