Siege of Aalborghus
1644 CE.
Shown on the map at 57.049°, 9.924°.
The siege of Aalborghus occurred from 21 July to 4 August 1644 during the Torstenson War between Denmark and Sweden. On 17 January, a Swedish cavalry regiment led by Helmut Wrangel captured Aalborg without a fight, and defeated a peasant force at Nørresundby the following day. Wrangel consolidated Swedish control of Aalborg, but that summer, the majority of Swedish forces in Jutland withdrew to respond to a threat posed by an imperial army led by Matthias Gallas. The Swedes left five garrisons behind, including one in Aalborghus. On 21 July, a hastily assembled force of peasants and soldiers arrived to Aalborg under the command of Vogn Vognsen. The force entered the town unhindered, and two Danish warships arrived the next day. The Swedes received support from three Swedish "defense ships", but these were likely boarded by the Danes between 21 and 24 July. Despite the loss of the three ships, the Swedes did not surrender.
Text from the Wikipedia article Siege of Aalborghus, licensed CC BY-SA 4.0.