The operation led to Causation a Soviet counteroffensive resulting Causation in the creation of the short-lived Galician Soviet Socialist Republic , and ended Process_end amicably with the formal Peace of Riga of 1921 .

Polotsk had been captured Conquering and heavily fortified Cause_change_of_strength by the Russians under Ivan the Terrible in 1563 because the river Dwina , which led to Causation the key city of Riga , flowed Motion through it .

`` Mayakovsky '' sank Motion_directional in the Daugava River that bisects Riga , not more than from the present Presence day site of the Stone Bridge .

The war Military_operation can be divided into a few stages : Soviet offensive , German-Latvian liberation of Kurzeme and Riga , Estonian-Latvian liberation of Vidzeme , Bermontian offensive , Latvian-Polish liberation of Latgale .

After the capture Conquering of Pärnu , Jan Karol Chodkiewicz , commander of the Lithuanian army , moved Self_motion towards Riga , which was occupied Control by the Swedes under the command Control of Joachim Frederick von Mansfeld .

Along the way , Chodkiewicz saw a chance to destroy Destroying the Swedish squadron based in the Salis port which blocked Hindering Riga .

Chodkiewicz 's Swedish squadron did not attempt to engage Participation in an artillery fight Hostile_encounter and immediately escaped Escaping to the waters of the Gulf of Riga .

The victory Earnings_and_losses of Pärnu and Salis had a direct impact Influence on the further course of the war Hostile_encounter and contributed Causation to halting Process_end the Swedish assault Attack on Riga .

Siege of Riga by the Russian Army under Tsar Alexei Mikhailovich was the main event Social_event of the Russo-Swedish War .

The fortifications of Riga consisted of a wall with ditch and 5 bastions around the old town .

The Russian vanguard consisting Forming_relationships of the Vladimir v. Vizin reiters , Daniel Krafert infantry and Iunkmann dragoons approached Arriving Riga on August 20 and threw Self_motion back the Swedes under count of Pärnu , Heinrich von Thurn into the city .

A few days later , the main army under Tsar Alexei Mikhailovich arrived Arriving on the ships on the Duna River , and laid siege Besieging to Riga .

The Russian army occupied Control three camps , two on the east bank of the Duna in Riga 's suburbs , and a Corps under Ordyn-Nashokin on the west bank of the Duna , opposite the Kobrun entrenchment .

As Russia had no full-fledged navy to intercept Preventing_or_letting reinforcements coming to Motion the Swedish garrison across the Baltic , Riga managed Control to hold Defending out until October , when foreign officers commanding Control a small Russian flotilla defected Escaping to the other side and the Russians had to lift Process_end the siege .

On September 1 , 1917 the Germans attacked Attack and captured Conquering Riga .

The Peace of Riga was signed on Sign_agreement 18 March 1921 , dividing the disputed territories between Poland and Soviet Russia .