Armenian–Azerbaijani War

Armenian–Azerbaijani War
Name	Armenian–Azerbaijani War
Conflict	Armenian–Azerbaijani War
Date	1918–1920
Place	Caucasus, Transcaucasia, Armenia, Azerbaijan, Nagorno-Karabakh
Result	Mixed territorial changes; Sovietization
Belligerents	First Republic of Armenia; Armenian Revolutionary Federation vs. Azerbaijan Democratic Republic; Musavat Party
Commanders	Aram Manukian; Hovhannes Katchaznouni; Nikol Aghbalian; Khosrov bey Sultanov; Khalil bey Khasmammadov
Strength	irregulars, volunteer detachments, remnants of Imperial Russian Army

Armenian–Azerbaijani War was a series of interethnic and interstate conflicts in the South Caucasus during the collapse of the Russian Empire and the aftermath of World War I, involving disputes over territory, national self-determination, and access to strategic resources. The conflict unfolded amid the rise of the First Republic of Armenia, the Azerbaijan Democratic Republic, and interventions by the Ottoman Empire, the British Empire, and later the Russian SFSR, culminating in Sovietization of the region. Fighting was concentrated in contested regions such as Nagorno-Karabakh, Nakhichevan, Zangezur, and the Erivan Governorate.

Background

The power vacuum after the February Revolution and the October Revolution precipitated competing claims by the Armenian National Council and the Azerbaijani National Council over former Transcaucasian Democratic Federative Republic provinces, while the collapse of the Imperial Russian Army left armed groups like Armenian volunteer units associated with the Armenian Revolutionary Federation and Azerbaijani militias tied to the Musavat Party vying for control. The Treaty of Brest-Litovsk and the Treaty of Batum altered borders and entangled the Ottoman Empire in the Caucasus Campaign, prompting leaders such as Aram Manukian and Nikol Aghbalian to organize defenses and administrations. Concurrent pressures from the British Army in Baku and the advance of the Red Army influenced local calculations, as did the demands of oil interests represented by companies active in Baku oil fields and the diplomatic initiatives of the Allied Powers at the Paris Peace Conference.

Course of the War

Fighting began in 1918 with clashes around Baku, where the Centrocaspian Dictatorship, the Baku Commune, and later the Azerbaijan Democratic Republic confronted Armenian and Bolshevik forces, leading to the Battle of Baku and involvement by the British Indian Army under General Lionel Dunsterville. Subsequent campaigns in 1919–1920 saw operations in Karabakh and Nakhichevan, punctuated by sieges, counterattacks, and raids involving commanders linked to the Armenian Revolutionary Federation and Azerbaijani figures such as Khosrov bey Sultanov and Khalil bey Khasmammadov. Notable engagements included local clashes in Shusha, confrontations near Goris, and skirmishes along the Aras River, while the Erivan and Ganja regions experienced mobilizations and reprisals. The arrival of the Russian SFSR and the Red Army offensives in 1920 resulted in the overthrow of the First Republic of Armenia and the Azerbaijan Democratic Republic and formal incorporation into the Soviet Union.

Combatants and Forces

Armenian forces comprised irregulars, Armenian volunteer detachments with lineage to units from the Armenian Fedayi tradition, and provisional armed formations organized by the Armenian Revolutionary Federation and the Armenian National Council, including veterans of the Caucasian Front. Azerbaijani forces included militias loyal to the Musavat Party, former members of the Imperial Russian Army of Azerbaijani origin, and local volunteer bands supported by municipal authorities in Baku and Ganja. External actors fielded forces or proxies: the Ottoman 3rd Army and the Ottoman Special Organization intervened early; the British Empire deployed expeditions drawn from the Indian Army; the Red Army and elements of the Russian SFSR later imposed Soviet control; and various paramilitary groups and foreign volunteers linked to the Armenian diaspora and Caucasian émigré networks participated. Weaponry ranged from rifles and artillery inherited from World War I arsenals to improvised armaments captured during operations.

Humanitarian Impact and Casualties

The conflict produced significant civilian displacement, communal violence, and demographic shifts across contested districts such as Zangilan, Qazax, and Syunik, with Armenians and Azerbaijanis suffering expulsions, massacres, and property losses during periods of occupation and counter-occupation. Epidemics and famine compounded wartime privations amid blockades of supply lines tied to transit points like Tiflis (now Tbilisi) and Kars, stressing medical relief efforts linked to organizations such as the American Committee for Relief in the Near East and missionary networks from Armenian Apostolic Church communities. Casualty estimates vary widely in contemporary and scholarly sources, reflecting partisan reporting in newspapers like The Times and pamphlets by political parties; demographic consequences influenced population figures recorded later by Soviet census operations and studies by historians of the Armenian Genocide and Caucasian conflicts.

International Involvement and Diplomacy

Diplomacy involved the Paris Peace Conference, negotiations mediated by representatives of the Allied Powers, and bilateral talks between delegations from Yerevan and Baku amid pressure from the Ottoman Empire and later the Russian SFSR. British intervention in Baku under William Montagu Curzon Wyllie-era officers and the deployment of the Dunsterforce highlighted imperial strategic interests tied to Persia and the Persian Campaign, while Ottoman advances invoked commitments from parties to the Treaty of Sèvres and related declarations. The League of Nations later encountered refugee petitions and border disputes traceable to these hostilities, and Soviet foreign policy shaped final borders through treaties implemented by the Transcaucasian SFSR and central organs of the Communist Party of the Soviet Union.

Aftermath and Consequences

The military and diplomatic outcomes led to shifting borders, population transfers, and the eventual Sovietization of Armenia and Azerbaijan as the Armenian Soviet Socialist Republic and the Azerbaijan Soviet Socialist Republic, with disputed regions like Nagorno-Karabakh and Nakhichevan placed under complex administrative arrangements that influenced later 20th- and 21st-century conflicts. The legacy affected interstate relations, minority rights debates, and regional alignments involving successors such as the Republic of Armenia and the Republic of Azerbaijan, and remained salient in later episodes including the First Nagorno-Karabakh War and the 2020 Nagorno-Karabakh war, as well as in scholarship by historians specializing in Caucasian studies and the historiographies of Armenian and Azerbaijani national movements.

Category:Wars of the Caucasus