After entering Jutland from the south, the Swedes then starting moving across Denmark, crossing the icy Little Belt onto the Danish island of Funen on 30 January 1658.

In June 1654, Russian soldiers crossed the border into Poland-Lithuania, which is traditionally thought of as the start of the Northern War of 1655–1660.

[4][3] Furthermore, the resistance faced by the Poles became more fierce as the war progressed, and the people frequently rose up against their Swedish occupiers.

[4] Sweden also faced pressure from the other European powers to end the war, Austria and Brandenburg sent aid to the Poles and the Dutch sent a fleet to Danzig to protect it from capture.

To Charles X Gustav, the declaration of war came as a blessing as he had now a perfect opportunity to leave the conflict in Poland without losing any honor.

[4] He marched his army with remarkable speed across Germany, retaking Bremen and continuing the advance via Holstein and Schleswig.

[6] The main Danish force was commanded by Rigsmarsk Anders Bille and was put in place in the Duchy of Holstein.

On 25 June, Iver Krabbe contacted the Governor of Gothenburg, Per Ribbing, requesting a local truce on the island of Hisingen, which was shared between Sweden and Norway.

However, Colonel Johan von Firck, along with his life company of some 170 men of pikemen and musketmen landed on the Swedish side of the Göta river, by way of Tjurholmen (Bull Island), which belonged to Norway.

Supported by a skerry boat armed with falconets, they pushed back some Swedish cavalrymen and levied peasants, and destroying a redoubt.

Noticing that the Swedes were building river vessels, Krabbe ordered his men to make a redoubt to protect the Norwegian bridgehead.

However, Krabbe soon got reports that Swedish reinforcements of some 150 men under Captain Bryngel Stark had arrived from Gothenburg in the form of cavalry and 200 infantry under Lieutenant Colonel Liborius Mentzer.

After the skirmish, the Norwegians retreated back across the river, and the units from Gothenburg withdrew, being replaced by two of Major General Harald Stake's companies.

Being aware of the threat to Västgötland posed by the Norwegians, Per Brahe ordered Field Marshal Robert Douglas to assume command there in late July.

Trading spices, gold and slaves became a had been growing throughout Europe, but it was really only after the Thirty Years' War that Scandinavian plans grew.

[15][16] Carloff would prove to be a useful asset for Danish ambitions in the area as after the outbreak of the Dano-Swedish War, it became attractive to attack the Swedes from all fronts.

[17] He arrived in January 1658 at the Gold Coast where Carloff would make a negotiation with the Dutch and the local King of Fetu, Breweda, who was in control of the area around the Swedish fort Carolusborg.

[18][17] Johan Filip von Krusenstierna was exiled from Cabo Corso, however, many of his men willingly deserted over to Carloff's side.

[16][15] Carloff then left Cabo Corso onboard the Stockholms slott with 40 sacks of gold, c 20 cannons, and 5 tons of Elefant tusks.

[18] However, King Breweda reacted strongly about Dutch overlordship of Cabo Corso and thus stormed the colony and returned it to the Swedes which would be fully reclaimed in December 1660 after the arrival of Swedish administrators.