Dano-Swedish War

The Dano-Swedish War, also known as the Norwegian War, was a war between Sweden and Denmark over the suzerainty of Norway.

Background
Ever since the nation's independence in 1445, Sweden has asserted itself over Denmark. The second time (the first was in the Swedish War for Independence this took place was in the Conquest of Scania, which ceded all of Scania along with Bohuslan to Sweden.

Now, the disputed area is Norway, a frontier country ready to explore any lands past Iceland. While Denmark is not necessarily weak, they have been growing weaker since the Conquest of Scania. In addition, they were already at war with Hamburg, Lubeck, and Bremen in the Weser War. This made this time the perfect time to strike.

Scandinavia
War was declared on 3 January 1504, making it the first Swedish war to begin after 1500. Swedish troops immediately headed straight for the Norwegian capital Akershus. With an artillery breach, the capital quickly fell on 1 May. English troops arrived shortly after, besieging the countryside. The Danish capital was the next target, and it fell quickly as well, on 11 October 1505. Kolding was next on 29 August 1506.

Meanwhile, Norwegian troops occupied the far-off Swedish and Finnish countryside. Soon, they moved into Novgorod proper.

English troops occupied the far-flung Iceland and Faroe Islands in 1504 and 1505 respectively.

Baltic States
The Livonian Order invaded Estonia in 1504, but were scared away by Swedish forces. They returned later in the year and instead besieged Riga and took it on 15 October 1505. Gustavstad was also targeted and occupied on 1 November 1506. Kola was the next city targeted in the Livonian advance, which fell on 5 August 1507, and the last was Viborg, which fell on 1 November.

Viborg was later liberated on 1 July 1508 and Gustavstad on 28 January 1509.

Western Europe
Gelren troops besieged Calais near the beginning of the war. These lands, as well as the other continental English possessions, were occupied over time.

In revenge, Swedish troops occupied Utrecht on 6 March 1507, then Gelre the city, though the latter's siege did not finish as Gelre agreed to leave the war shortly afterwards anyways.

Naval Situation
Danish ships initially had naval superiority, but with England entering the war, they lost that advantage. Sjaelland was blockaded by the Swedish navy, blocking off Danish access to Sweden proper.

End
The Treaty of Elfsborg was signed on 19 February 1509, which finally ended the war. Norway was to become a vassal under Sweden. War reparations would also be paid to Sweden.