Event of 1814: Swedish–Norwegian War (1814) – Battle of Langnes ends in a Norwegian victory.

Background. Prior to the battle, the Norwegian Army had suffered multiple defeats in Eastern Norway. The surrender of Fredrikstad Fortress on August 4 signaled an impending Swedish victory. However, the engagement at Langnes allowed the Norwegians to avoid unconditional surrender, serving as a tactical victory that preserved their military position and diplomatic options.

Engagement. Swedish troops advanced in columns from a rise near Langnes Station, approximately half a kilometer from the Norwegian lines. They faced concentrated fire, causing the attack to stall without breaching the Norwegian defenses. The final shots of this major engagement ceased at noon on August 9, 1814, marking the end of the last significant combat between the two forces.

Aftermath. Crown Prince Charles John ordered troops to secure the river's eastern bank, leading to skirmishes until a ceasefire was signed on August 14. The intact Norwegian army made a military victory costly for Sweden. This tactical success provided the diplomatic room necessary to avoid dictated surrender terms. The sources separately record the Union between Sweden and Norway's establishment on 4 November 1814, outside this event's scope.