Nils Brahe gives a similar answer who, in a letter he wrote on the same day, reported from "the fort of Fredrichsudd" that "we had intended to storm it as we had done yesterday, but since the place is strong and well-manned, we found it unwise'".

[3] In the beginning, when the Swedish army had recently arrived to Fredriksodde, King Frederick III, along with the Colonels Sehested and Rantzau, attempted a sortie with 400 cavalry but were repelled due to being overwhelmed.

The Swedish camp suffered from freezing and starving while the Danish defenders were somewhat dry and secure behind the walls, as long they had enough supplies.

[3][7] The confidence of the defenders was strengthened when the Swedes became hesitant to storm, especially after they received reports of Charles X Gustav departing to Wismar.

[8][6] As a result of the siege, the defenders were completely cut off from the rest of Jutland, but they maintained an important opening to Fyn, from where they received fresh supplies and troops.

[7] The Swedish navy was tasked with cutting communication across the Little Belt in order to prevent reinforcements from reaching Jutland.

[10] According to Dahlbergh, the reconnaissance revealed that there was a weakpoint in the fortress wall in the south-west where the defenses only consisted of three rows of wooden palisades and a low waterline, with no proper moat, which was where the Swedes chose to strike.

[15] At two o'clock, Wrangel arrived and rode along the Swedish line and shouted encouraging words to the officers and soldiers.

He bore a bundle of straws on his left arm since it was a common identification mark that all Swedes were supposed to wear to minimize friendly fire.

[17][18] Last in the column, Stenbocks Brigade, led by Colonel Spens and a German force under Generalmajor Fabian von Fersen advanced forwards.

[18] Johan Georg von Anhalt, along with 24 cavalry companies, exploited the shallow surrounding waters of the Little Belt, bypassed the Danish lines.

[19] The second column, commanded by Lieutenant General Jacob Kasimir De la Gardie, attacked the Mittlager port, along with Billes, Prins Georg, Prinsporten, Prinsessan, and Herrarnas bastions.

[20][18] The third column, led by Generalmajor Fabian Berendes, attacked Kongeporten and Dronningens bastions along with a nearby curtain wall.

[20][18] Anders Bille, who had been seriously wounded along with any surviving Danish soldiers, retreated into the Berfodde castle at the tip of the cape in order to attempt escaping over to Fyn.

[18] Continued resistance was futile, the Swedes had at this point captured the entire fortress in exception to the citadel on Bers Odde, which had already been surrounded, with nobody being able to get out.

[29] The plunder taken from the fortress was significant, in addition to the fact that the Swedes had occupied a strong and strategically important fortress, they captured 73–80 cannons, large amounts of gunpowder, 1,000 muskets, 1,200 armor pieces, 700 helmets, 39 banners, and a large amount of barrels containing salted meat, herring, cod, rye, and malt.

Public anger, fuelled by propagandists who wanted to shift the blame from Frederick III, accused the dead Bille of the disaster and had him sentenced to death posthumously.