The Battle for Zangezur was a military conflict fought between April 26 and July 16, 1921 for control of the strategic and rugged region of Zangezur (Syunik). The war was waged between Armenian national forces, initially part of the First Republic of Armenia and later organized as the Republic of Mountainous Armenia, and the Soviet Red Army.
The conflict is historically significant for ensuring that the Zangezur region remained an integral part of Armenia rather than being annexed by Soviet Azerbaijan. Led by the military commander Garegin Nzhdeh, the Armenian resistance transformed Zangezur into the last bastion of Armenian independence after the fall of the central government in Yerevan in December 1920.
Background
Soviet invasion of Armenia
Following the sovietization of Azerbaijan in April 1920, the 11th Red Army took up positions along the frontiers of the Armenian republic. The Soviet leadership in Moscow, while engaged in negotiations with the Armenian mission led by Levon Shant, authorized the Red Army to occupy the "disputed" territories of Karabagh, Zangezur, and Nakhichevan. For the Soviets, control of these regions was vital to opening a strategic land corridor to their ally, the Turkish Nationalist movement of Mustafa Kemal Pasha.
In June 1920, the Red Army's 32nd Rifle Division began its advance into Zangezur. Despite local Armenian protests, a Soviet scouting party entered the village of Tegh on June 29, and by July 5, the Red Army occupied Goris, the administrative center of the district.
The initial period of Soviet occupation was marked by political repression. The Cheka (extraordinary committee) carried out numerous arrests of Armenian nationalists and socialist opponents. In early August, the Red Army executed prominent Armenian figures, including Parliament members Arshak Shirinian and Vahan Khoreni, whose bodies were discovered with signs of torture.
On August 10, 1920, the Armenian government in Yerevan, pressured by the simultaneous Turkish invasion on its western front, signed a preliminary treaty in Tiflis. This accord gave the Armenian government's "temporary" consent to the Soviet occupation of Zangezur and Karabagh, hoping to stabilize relations with Moscow while focusing on the Turkish threat.
While regular Armenian army units under Dro withdrew to Daralagyaz following the August treaty, Garegin Nzhdeh refused to abandon the region. He retreated to his stronghold on Mount Khustup in the Ghapan district, vowing to resist the Bolshevik-Turkish alignment. On August 25, 1920, Nzhdeh was proclaimed Sparapet (Supreme Commander) by his partisans in the village of Kavart.
Exploiting the local population's resentment toward Bolshevik requisitions and the murder of their leaders, Nzhdeh launched a general rebellion on October 10. His irregulars utilized explosive-filled barrels rolled down mountain slopes and their intimate knowledge of the terrain to devastate Soviet columns.
Confrontation in Goris
General Nikifor Nesterovskii and later General Pyotr Kuryshko led massive operations to liquidate the rebellion. However, in a series of engagements during November 1920, Nzhdeh's forces routed the Red Army’s 28th Division. By November 22, 1920, Nzhdeh’s forces triumphantly re-entered Goris, expelling the Red Army from Zangezur.
The sovietization of the central Armenian government in Yerevan occurred on December 2, 1920. Zangezur, however, remained independent under Nzhdeh's control, declaring itself "Autonomous Siunik." Following the failed February Uprising of 1921 in Yerevan, thousands of Armenian soldiers, intellectuals, and political leaders fled to Zangezur to continue the resistance.
Declaration of Mountainous Armenia
On April 26, 1921, at a congress held in Tatev, the Republic of Mountainous Armenia was proclaimed. Nzhdeh served as the supreme military commander, while Simon Vratsian headed the civil administration. The republic continued to demand that Zangezur remain an integral part of Armenia, citing the declaration made by Soviet Azerbaijan's leader, Nariman Narimanov, on November 30, 1920, which had briefly ceded the disputed regions to Armenia as a "fraternal gesture".
The conflict in Zangezur experienced a significant escalation in late 1920. Rebel forces utilized the mountainous terrain and guerrilla tactics to outmaneuver the Red Army, and Soviet operations were severely hampered by the onset of winter. As a result, Soviet regiments were drastically depleted; for instance, regiments of the 84th Rifle Brigade numbered only 150 to 250 bayonets each. Specifically, the 248th Regiment fielded 188 bayonets, 30 machine gunners, 9 cavalrymen, and 29 command staff, while the 249th Rifle Regiment consisted of 118 bayonets, 20 machine gunners, 16 telephone operators, and 14 command staff. Non-combat losses were high, with disease-related fatalities exceeding combat wounds. On December 25, 1920, a congress convened by Nzhdeh at the Tatev Monastery refused to recognize the Sovietization of Armenia and declared Zangezur an autonomous republic.
War
Forces
Red Army
Across the campaign, estimates of Bolshevik and Soviet-aligned forces attacking Zangezur vary depending on the operational phase and front. According to Hrant Simonyan, the Bolshevik force deployed across all axes on the eve of the decisive mid-June 1921 offensive amounted to approximately 10,000 soldiers, supported by rear units and artillery. The eastern strike element, designated as the Karabakh-Zangezur group under the 1st Caucasian Corps, comprised 5,175 bayonets, 400 sabres, 100 machine guns, 12 artillery pieces, and 7 aircraft. Advancing from the west, the Yerevan Group was split into three operational columns:
- The first column consisted of 1,128 infantrymen and 27 machine guns, drawing from the 1st, 2nd, and 3rd Rifle Regiments of the Armenian Red Army alongside the "Red Battalion".
- The second column assembled 2,150 combined infantry and cavalry troops, 80 machine guns, and 6 artillery pieces.
- The third column fielded 1,208 troops, 45 machine guns, and several artillery pieces.
Earlier in the campaign, Red Army field formations operating in the rugged terrain had suffered severe attrition. During late 1920, the 84th Rifle Brigade was reduced to between 150 and 250 bayonets per regiment; the 248th Regiment fielded only 188 bayonets, while the 249th Regiment was reduced to 118 bayonets.
Official records of the People's Commissariat for Military Affairs (NKVM) documented the overall operational strength assigned to the Separate Caucasian Army during the 1921 counter-insurgency campaign in the region, peaking in April at 19,500 troops (35 infantry battalions and 10 cavalry squadrons):
- April 1921: 19,500 (35 infantry battalions, 10 cavalry squadrons) (highest point)
- May 1921: 10,300 (28 infantry battalions)
- June 1921: 8,500 (23 infantry battalions)
- July 1921: 8,000 (21 infantry battalions)
Rebel
The forces of the Republic of Mountainous Armenia under Garegin Nzhdeh are estimated to have fielded between 9,100 and 12,000 fighters across the various defensive sectors. Soviet military assessments compiled for April 1921 recorded 9,170 combatants (6,800 infantry and 2,370 cavalry) equipped with 96 machine guns and more than 10 artillery pieces. By the eve of the Soviet mid-June offensive, Simonyan estimates that rebel strength had expanded to around 12,000 men under arms, supported by 16 artillery pieces and over 100 machine guns.
Sector garrisons and regional detachments included:
- The main body of the Zangezur Western Front, which held its sector with 330 soldiers.
- The Meghri sector, garrisoned by 2,500 fighters (including 600 cavalry), 2 mountain guns, and 20 machine guns.
- The Daralagyaz region, defended by approximately 3,000 regular infantry and 500 cavalry.
- The Sisian region, manned by 1,500 regular troops equipped with 24 machine guns.
The operational statistical returns of the NKVM tracked the total rebel combatant numbers in the sector month-by-month throughout 1921, showing a peak of 9,500 in April before a steady collapse following the July retreat across the Araxes River:
- April 1921: 9,500 (25 bands) (highest point)
- May 1921: 8,100 (21 bands)
- June 1921: 7,000 (17 bands)
- July 1921: 6,000 (15 bands)
Timeline
By the spring of 1921, Soviet estimates placed the Armed Forces of Mountainous Armenia at around 9,170 total fighters (6,800 infantry and 2,370 cavalry). They were equipped with 96 machine guns and over 10 artillery guns. The main rebel headquarters was situated south of Goris, with a contingent of approximately 700 men stationed under Nzhdeh at Dortpi. On April 21, 1921, a second congress at Tatev proclaimed the "Republic of Mountainous Armenia."
While negotiations between Bolshevik Armenia and the rebel forces were ongoing in May 1921, the Red Army command, following a Kavburo decision, prepared an offensive set for June 25, 1921, choosing to rely primarily on Armenian units of the Red Army. The attempt to peacefully integrate Zangezur had stalled in May, and anti-Bolshevik resolve was further fueled when former representatives of Georgia, Armenia, Azerbaijan, and Dagestan signed an agreement in Paris on June 10, 1921, pledging joint struggle against the Bolsheviks. On June 13, the Soviet Armenian government prepared an appeal signed by Alexander Miasnikian and members of the government to the “Authorities of Zangezur”, which was printed as a leaflet for propaganda purposes.
Initial Armenian offensive
As the Soviet presence consolidated, the military situation grew increasingly volatile. Around this time, roughly 3,000 Azerbaijani forces infiltrated the borders of Mountainous Armenia under the guise of nomads near Minkend, further threatening Syunik's defense lines. On June 5–6, 1921, Soviet forces launched a major offensive on the Ordubad–Genvaz front. By the evening of June 6, Syunik's popular companies repulsed the attack, inflicting heavy casualties and chasing the retreating forces back to Ordubad, which Colonel Ohanjanian noted was a significant morale boost for the defenders. Learning of Bolshevik preparations, rebel forces, fortified on the left bank of the Arpacha River on the impregnable heights of Ghushchi–Genvaz, launched an attack. The 330 soldiers constituted the bulk of the troops of the Zanzezur Western Front. Commanded by Yaponin (Yovhannes Paronian), the attack was sudden and pushed through the Vorotan mountain pass. On the night of June 15–16, the attack had succeeded; the rebels quickly pushed out Armenian Red Army troops and captured the entire Daralagyaz District.
On June 16, commander Kuro Tarkhanian/Tarkhanov sent a telegram to Nzhdeh, who was in Kapan, reporting that rebel horsemen had taken 3 cannons, ammunition, and 170 prisoners (including three battalion commanders) from the Soviets, alongside 4 mountain cannons. Tarkhanian noted that the enemy was retreating in terror and that their Daralagyaz units were effectively beaten. On June 17, rebel forces took an additional 700 Soviet troops prisoner and captured several machine guns. Aram Simonyan notes that this surprise attack placed the Soviets in a "difficult position," decisively beating their units in the first three days and giving the rebels the advantage. Capturing the Arpa bridge threatened other Soviet units from the rear, causing the Daralagyaz garrison—the first regiment of the Soviet Armenian brigade—to collapse and cease operations after suffering heavy casualties and encirclement.
The second Soviet Armenian brigade also began a disorderly retreat under heavy rebel attacks. Although brigade commanders briefly formed a short-lived battle order, increasing pressure forced them to retreat once more. This retreat allowed the rebel forces in Zangezur to deploy their cavalry, which passed behind the third Soviet Armenian brigade. To avoid encirclement, the regiment retreated to the eastern heights of Aynadzor (Aghavnadzor), where they were continually attacked by Zangezur rebels. The second and third battalions evaded capture by retreating across the Arpa bridge to Norashen, whereas the first battalion was separated under pressure, abandoned its positions on Aynadzor’s heights, and retreated toward Gharanlugh (Martuni).