After further campaigning in northern Sweden, with battles such as Skellefteå and Hörnefors, the Russian forces under Nikolay Kamensky occupied all of Västerbotten by June.

On the 19th, the Swedish army was attacked in a disadvantageous position at Sävar and, instead of withdrawing across the river, Wachtmeister chose to fight over the vital heights of Krutbrånet.

According to the subsequent Treaty of Fredrikshamn, the Swedes ceded Finland to Russia all the way to the Torne River; the somewhat weaker Russian demands were most likely a result of the Västerbotten expedition.

Following the Convention of Olkijoki, signed on 19 November, the Swedish army withdrew over the Kemi River in December and thus abandoned the eastern part of the kingdom (present-day Finland), after nine months of fighting.

[7][8] In March the next year, in the midst of the Swedish revolution (in which Gustav IV Adolf was overthrown and subsequently replaced by his uncle Charles XIII), Alexander I ordered a threefold attack on actual Sweden, to force the country into submission; he demanded that Sweden would enter the Continental System, while also ceding its eastern territorium to the Russian Empire.

[12][13] Angered by the prolonged negotiations, Alexander I ordered a continued offensive in northern Sweden; in May, a small Swedish force was quickly overwhelmed at the Battle of Skellefteå—after an heroic defence which saved the vital provisions—leading to the Russian capture of Umeå.

[14][15] Västerbotten, all the way from the Kemi and Öre Rivers, was thus occupied by the Russians who, after being denied the Swedish magazines, suffered greatly from the lack of provisions.

[17] After a Swedish counterattack at the Battle of Hörnefors by Johan August Sandels, in July, the fighting once again died out in favor of the prolonged, but ongoing, peace negotiations.

[18][24][note 2] Simultaneously, Fabian Wrede and Sandels (with 4,000 men) would advance from the Öre River in the south, the Russian army would thus be caught between the hammer and anvil.

[34][37] Only the first out of three Swedish divisions was deployed west of the rather fordable Sävar River, which runs south to north through the village, while the second and third initially remained on the east side.

[2] The first brigade established outposts to the west of Sävar, as well as on the vital wooded heights further southwest, called Krutbrånet—referred to, by Wachtmeister, as "virtually a fortress"—on which the main confrontation would take place.

[38][39] The distance between Krutbrånet and the Sävar bridge was about 1 km (1 mi) over mainly open fields and valleys, which were split by a small stream (Oxbäcken) which ran in a north-western direction from the river.

[46][61] The Russian artillery at Krubrånet completely dominated the battle, as it fired upon the Swedish troops marching across the field towards the heights; the elevated position, however, neglected the chance for their round shot to strike multiple battalions at once.

[62][63] Between 10:00 and 11:00, Wachtmeister ordered additional troops to reinforce the Swedish right, to roll up the Russian left wing all the way to their centre and capture the guns at the summit.

[39][75] The outpost fought a retreating action for over an hour, until it was reinforced by a Swedish Jäger battalion (250 men) sent by Wachtmeister, which temporary halted the Russian advance.

[1][41][61] After receiving additional reports from the retreating Swedes, Wachtmeister, who thought it had only been a Russian reconnaissance force, committed his elite units—the Queen's battalion followed by the Svea battalion—to their assistance.

[81] At 15:00 they received orders from Wachtmeister to carefully pull back towards Sävar (at this time the Swedish main army had already begun their retreat).

The two battalions, largely separated from each other, successfully paved their way through the encirclement with the bayonet and reached the main army at Ratan either late at night or the following day, with about 70 captured Russians.

[74][92] Meanwhile, a Swedish courier whom Wachtmeister had dispatched south towards Ytterboda—with the orders to withdraw to Sävar—hastily returned and notified the general of the approaching Russians at his left flank.

[93] As Wachtmeister turned his left wing to face the southern threat, the Russians, while sustaining heavy losses from canister shot, forced the crossing near the destroyed bridge.

Three Swedish battalions with two guns acted as rearguard and exchanged fire with the Russian forces occupying Sävar, until they likewise withdrew around 16:00.

Hornborg also believes that the Russian casualty figure at Ratan, presented by Kamensky, is unreliable and that it should undoubtfully be a lot larger;[99] other sources puts these as high as 500–700.

Wachtmeister motivated his decision to retreat with the high amount of losses sustained (perhaps influenced by the king's earlier request for him not to waste the last Swedish reserve).

[3][102][103][104][105][106][107] Wachtmeister initially planned to make a stand at Djäkneboda, which was an utmost advantageous position, but he determined that the risk of being outflanked was too great and instead marched on towards Ratan; this enabled the Russians to use the main road to retreat.

On the 22nd, as Wrede made preparations to storm the city, Kamensky ordered a general retreat as he feared being cutoff once again, had Puke landed further north.

[4][120] On 25 August, Kamensky fended off a Swedish attack on his fortifications at the Pite River, aimed to cut off his supply lines north.

On 2 September, the two sides agreed to an armistice which would be in effect until the Treaty of Fredrikshamn was signed: Sweden ceded its eastern territorium (Finland) all the way from the Torne River, including the Åland Islands; Kamensky's retreat from Västerbotten, which was initially met with disappointment from many of his countrymen, had most likely contributed to Alexander I's softer demands.