The siege ended in a quick Danish victory, and the Swedish commander would surrender the fort before any direct assault would be initiated.

Frederick II of Denmark was stationed in Scania with 28,000 men and began marching up to Älvsborg Fortress.

[1] The garrison was keen on defending the castle from the Danish artillery, and Frederick II describes an incident from the siege:[1] We [Frederick] were in front of the castle with our colonels and men of war; and (just) as we stood outside one rampart, he shot [the enemy] with half a snake out of the castle us right overhead, not ½ cubit, midway between Count von Schwartzburg and Count Johan of Oldenburg, and the rush of the lot flew right over Jørgen von Holle while he was sleeping, and met one of his generals and broke his arm.

Glory be to God who preserved us.After three days of shooting, the besiegers had made a hole in the fortification, and thereby the fortress could be assaulted.

[1] Frederick II installed Jørgen Rantzau as commander of the conquered fortress, with a garrison of four companies, later reduced to two.