HistoryData
war1917

Kornilov affair — attempted military coup d'état by the Commander-in-Chief of the Russian Army

September 1, 1917

The failed coup accelerated the Bolsheviks' rise to power, directly enabling their successful October Revolution two months later.

Quick Facts

Year
1917
Category
war

Key Facts

Dates (New Style)
10–13 September 1917
Dates (Old Style)
28–31 August 1917
Coup leader
General Lavr Kornilov, Commander-in-Chief of the Russian Army
Outcome for Kornilov
Removed as Commander-in-Chief and incarcerated
March leader's fate
Aleksandr Krymov committed suicide
Political consequence
Kerensky proclaimed the Russian Republic; Bolsheviks significantly strengthened

Location

Map of Petrograd, RussiaMap of Petrograd, RussiaPetrograd, Russia

Cause → Event → Consequence

Cause

Following the collapse of Romanov rule, Russia's Provisional Government grew deeply unpopular due to continued participation in the First World War and economic strain. After the failed Kerensky Offensive and the July Days unrest, Kerensky appointed General Kornilov as Commander-in-Chief. Miscommunication led Kornilov to believe a Bolshevik takeover of Petrograd was imminent, prompting him to march on the capital against the government's wishes.

Event

From 10 to 13 September 1917, Kornilov ordered his troops to advance on Petrograd in an attempted coup against the Provisional Government and the Petrograd Soviet. Kerensky called on the Petrograd Soviet to resist. The Bolsheviks coordinated with railway workers to block the army's movement, infiltrated Kornilov's forces to encourage desertion, and conducted sabotage. The coup collapsed before the army reached Petrograd; Kornilov was arrested and march leader Krymov took his own life.

Consequence

The failed coup strengthened the Bolsheviks considerably: they acquired arms distributed for Petrograd's defense, secured the release of imprisoned leaders including Leon Trotsky, and gained popular prestige for stopping the putsch. Kerensky formally abolished the monarchy and proclaimed the Russian Republic. The Bolsheviks' enhanced organization and weaponry directly contributed to their successful seizure of power in the October Revolution of 1917.

Belligerents & Mobilization Analysis

Side A

1 belligerent

Russian Provisional Government / Petrograd Soviet / Bolsheviks / Railway workers
Key Commanders

Alexander Kerensky, Leon Trotsky.

Side B

1 belligerent

Forces loyal to General Lavr Kornilov
Key Commanders

General Lavr Kornilov, Aleksandr Krymov.

Outcome
Coup attempt failed; Kornilov arrested, Krymov died by suicide, Bolsheviks significantly strengthened

Timeline Context

Timeline around 191719171914191519161918191919201917 battle of the Mesopotamian Campaign of WWI1917 battle during the First World War1917 battles on the eastern front of WWI1917 Last Russian offensive of WW1Riots at the Santa Fe Bridge between El Paso, Texas and Juárez, Mexico1917 South American Championship — football tournamentFebruary Revolution — first of two revolutions in Russia in 1917Battle on 28-29 september 1917kornilov-affair-attempted-military-coup-d-tat-by-the-comm-1917