thumb|Map of military movements during the War
The Kalmar War (1611–1613) was fought between Denmark–Norway and Sweden. Though Denmark–Norway soon gained the upper hand, it was unable to defeat Sweden entirely. The Kalmar War was the last time Denmark–Norway successfully defended its dominium maris baltici against Sweden, and it also marked the increasing influence of the two countries on Baltic politics.
Background
Since Denmark–Norway controlled the strait between the Baltic Sea and the North Sea, Sweden sought an alternative trade route through sparsely populated Lapland to avoid paying Denmark's Sound Dues. In 1607, Charles IX of Sweden declared himself "King of the Lapps in Nordland" and began "collecting" taxes in Norwegian territory, even south of Tromsø.
Since the Sound Dues were Denmark's main source of income, Denmark–Norway did not want to see alternative trade routes established, particularly when established through Norwegian territory. Denmark–Norway protested.
King Charles IX of Sweden ignored the protests of King Christian IV of Denmark and Norway. Finally, in April 1611, in response to Sweden's claim of a traditionally Norwegian area in Northern Norway, Denmark–Norway declared war upon Sweden and invaded.
War
1611: Beginning of the war
The Swedes were ill-prepared for war, as their main field army was engaged in the Ingrian War, and obtaining further mercenaries was out of the question.
The Danish-Norwegian side planned to attack Sweden on three fronts; from Kristianopel towards Kalmar, from Halmstad towards Jönköping, and from the Norwegian side towards the fortress of Älvsborg and thereafter further into Västergötland.
A force of 5,200 Danish troops laid siege to the city of Kalmar, ultimately taking it. The Swedes were forced to scuttle some 20 ships in Kalmar to prevent the Danes from capturing them. Norwegian forces, although stationed on the border, were instructed not to enter Sweden. On 26 June a Swedish force carried out the Storming of Kristianopel.
In the summer of 1611, Swedish forces under Baltzar Bäck were ordered to invade Norwegian Jämtland. They did so, and armed Swedish peasants marched into Härjedalen. Both Jämtland and Härjedalen were conquered without much fight. However, Bäck's lack of ability, or will, to stop excesses against the population meant that the locals eventually rose up against the Swedish occupants. In the end, the Swedish troops could not handle the situation and were forced to leave Jämtland and Härjedalen in autumn 1612.
In early 1612, Denmark–Norway attacked and eventually conquered two fortresses on the border between the fighting countries, Älvsborg and Gullberg, both in present-day Gothenburg. This was a major setback for Sweden, as the country now lacked access to the sea in the west. Having achieved this success, and aiming to end the war as soon as possible, the Danish command ordered an attack deep into Sweden, towards the capital of Stockholm. However, this proved to be a failure. Scorched earth methods and guerrilla warfare from the Swedish side made this a very difficult task and many of the mercenaries in the Danish army deserted since they did not receive their pay. Thus, the Danish army could never mount a serious attack on the capital itself.
The Kalmar War, in addition to the Northern Seven Years' War before, gave rise to centuries of rivalry between the Norwegians and the Swedes which greatly influenced the machinations of the personal union between the two countries after the Dano–Norwegian loss in 1814. Rather than ceding Norway to Sweden like what was agreed upon in the Treaty of Kiel, Norway denied being ruled under Sweden and rebelled in a short war known as the Norwegian War of Independence. This would result in a treaty allowing Norway to keep most of its sovereignty while only being loosely held in union with Sweden, until gaining complete independence in 1905.
Denmark–Norways's successful defense of its Dominium maris baltici gathered much attention from surrounding countries since the Baltic Sea was a lucrative trade route. Other powers opposed Denmark – Norway and Sweden's vie for total control of power of the Baltic Sea and would eventually intervene. The rise of the Maritime Powers including Great Britain and the Dutch established a rivalry for power in the Baltic Sea. Archduke Albert of the Habsburgs sought out aid from the Hanseatics in order to challenge the military prowess of King Christian IV.
In popular memory
Although a side-note to the war, the Battle of Kringen, in which Scottish mercenary forces were defeated by Gudbrandsdal militiamen from Lesja, Dovre, Vågå, Fron, Lom, Skjåk and Ringebu is a noted military event in Norway, celebrated to this day.
See also
- Dano–Hanseatic War (1426–35)