Finnish Civil War

Finnish Civil War
Part of Eastern Front of World War I, (until 3 March 1918), Russian Civil War and Revolutions of 1917–1923

Tampere's civilian buildings destroyed during the Battle of Tampere
Date
  • 27 January – 15 May 1918
  • (3 months, 2 weeks and 4 days)
Location
Result

Finnish Whites victory

  • Establishment of the Kingdom of Finland
  • German hegemony until November 1918
  • Division in Finnish society deepens
  • Collapse of the Finnish Reds
Territorial
changes
Dissolution of the Finnish Socialist Workers' Republic
Belligerents
Commanders and leaders
  • C. G. E. Mannerheim
  • Hannes Ignatius
  • Ernst Linder
  • Ernst Löfström
  • Martin Wetzer
  • Karl Wilkman
  • Hans Kalm
  • Stanislaw Boguslawski
  • Rüdiger von der Goltz
  • Konrad Wolf
  • Hans von Tschirsky
  • Otto von Brandenstein
  • Hugo Meurer
  • Harald Hjalmarson
  • Hjalmar Frisell
  • Kullervo Manner
  • Ali Aaltonen 
  • Eero Haapalainen
  • Eino Rahja
  • Adolf Taimi
  • Evert Eloranta
  • August Wesley
  • Hugo Salmela 
  • Heikki Kaljunen
  • Fredrik Johansson 
  • Matti Autio 
  • Verner Lehtimäki
  • Konstantin Eremeev
  • Mikhail Svechnikov
  • Georgy Bulatsel 
Units involved
Order of battle Order of battle
Strength
  • White Guards 80,000–90,000
  • Jägers 1,450
  • Imperial German Army 14,000
  • Swedish Brigade 1,000[2]
  • Estonian volunteers[3]
  • Polish Legion 1,737[4]
  • Red Guards 80,000–90,000 (2,600 women)
  • Former Russian Imperial Army 7,000–10,000[2]
Casualties and losses
  • Whites
    • 3,500 killed in action
    • 1,650 executed
    • 46 missing
    • 4 prisoner deaths
  • Swedish volunteers
    • 55 killed in action
    • Germans
    • 450–500 killed in action[5]
  • Total
    • 5,700–5,800 casualties (100–200 neutral/White civilians)
  • Reds
    • 5,700 killed in action
    • 10,000 executed
    • 1,150 missing
    • 12,500 prisoners deceased, 700 acute deaths after release
  • Russians
    • 800–900 killed in action
    • 1,600 executed[5]
  • Total
    • 32,500 casualties (100–200 neutral/Red civilians)

The Finnish Civil War[a][b] was a civil war in Finland in 1918 fought for the leadership and control of the country between White Finland and the Finnish Socialist Workers' Republic (Red Finland) during the country's transition from a grand duchy ruled by the Russian Empire to a fully independent state. The clashes took place in the context of the national, political, and social turmoil caused by World War I (Eastern Front) in Europe. The war was fought between the Red Guards, led by a section of the Social Democratic Party with backup of the Russian bolsheviks and the White Guards of the senate and those who opposed socialism, with major assistance by the German Imperial Army, along the German goal to control Fennoscandia. The paramilitary Red Guards, which were composed of industrial and agrarian working class people, controlled the cities and industrial centres of southern Finland. The paramilitary White Guards, which consisted of land owners and the middle and upper class Finns, controlled rural central and northern Finland, and were led by General C. G. E. Mannerheim.

In the years before the conflict, Finland had experienced rapid population growth, industrialisation, urbanisation and the rise of a comprehensive labour movement. The country's political and governmental systems were in an unstable phase of democratisation and modernisation. The socio-economic condition and education of the population had gradually improved, and national awareness and culture had progressed. World War I led to the collapse of the Russian Empire, causing a power vacuum in Finland, and the subsequent struggle for dominance led to militarisation and an escalating crisis between the left-leaning labour movement and the conservatives. The Reds carried out an unsuccessful general offensive in February 1918, supplied with weapons by Soviet Russia. A counteroffensive by the Whites began in March, reinforced by the German Empire's military detachments in April. The decisive engagements were the Battles of Tampere and Viipuri, won by the Whites, and the Battles of Helsinki and Lahti, won by German troops, leading to overall victory for the Whites and the German forces. Political violence became a part of this warfare with around 12,000 casualties, most of whom were Reds. Moreover about 12,500 Red prisoners died of malnutrition and disease in camps. In total 39,000 people, of whom 36,000 were Finns, died in the conflict.

In the immediate aftermath, the Finns passed from Russian governance to the German sphere of influence with a plan to establish a German-led Finnish monarchy. The scheme ended with Germany's defeat in World War I, and Finland instead emerged as an independent, democratic republic. The civil war divided the nation for decades. Finnish society was reunited through social compromises based on a long-term culture of moderate politics, religion, and a post-war economic recovery.

The war was the most deadly civil conflict in the world relative to population per month until the Rwandan genocide of 1994, and is the most deadly to have happened in Europe.[6]

  1. ^ Including conspirative co-operation between Germany and Russian Bolsheviks 1914–1918, Pipes 1996, pp. 113–149, Lackman 2009, pp. 48–57, McMeekin 2017, pp. 125–136
  2. ^ a b Arimo 1991, pp. 19–24, Manninen 1993a, pp. 24–93, Manninen 1993b, pp. 96–177, Upton 1981, pp. 107, 267–273, 377–391, Hoppu 2017, pp. 269–274
  3. ^ Ylikangas 1993a, pp. 55–63
  4. ^ Muilu 2010, pp. 87–90
  5. ^ a b Paavolainen 1966, Paavolainen 1967, Paavolainen 1971, Upton 1981, pp. 191–200, 453–460, Eerola & Eerola 1998, National Archive of Finland 2004 Archived 10 March 2015 at the Wayback Machine, Roselius 2004, pp. 165–176, Westerlund & Kalleinen 2004, pp. 267–271, Westerlund 2004a, pp. 53–72, Tikka 2014, pp. 90–118
  6. ^ Kidd, Colin (1 May 2019). "Upheaval by Jared Diamond review – how nations cope with crisis". The Guardian. ISSN 0261-3077. Retrieved 26 July 2025.


Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).