The Brusilov offensive, also known as the "June advance", of June to September 1916 was the Russian Empire's greatest feat of arms during World War I, and among the most lethal offensives in world history. The historian Graydon Tunstall called the Brusilov offensive the worst crisis of World War I for Austria-Hungary and the Triple Entente's greatest victory, but it came at a tremendous loss of life. It was arguably the most successful offensive in the entirety of the First World War. The victory contributed to a morale upsurge among the Russian troops, in 1917, Nicholas II planned a general offensive along the entire front in order to end the Central Powers. After the victory, the Petrograd conference was held at which the post-war structure of the world was discussed. Even despite the losses, the Russian armies were still being reinforced with new forces, the number of weapons increased, and new railways were being built.
Nikolai Nikolayevich Yudenich was a commander of the Russian Imperial Army during World War I. He was a leader of the anti-communist White movement in northwestern Russia during the Civil War.
The Eastern Front or Eastern Theater of World War I, for Russia Second Patriotic War, was a theater of operations that encompassed at its greatest extent the entire frontier between Russia and Romania on one side and Austria-Hungary, Bulgaria, the Ottoman Empire, and Germany on the other. It ranged from the Baltic Sea in the north to the Black Sea in the south, involved most of Eastern Europe, and stretched deep into Central Europe. The term contrasts with the Western Front, which was being fought in Belgium and France.
The Battle of Sarikamish was an engagement between the Russian and Ottoman empires during World War I. It took place from December 22, 1914, to January 17, 1915, as part of the Caucasus campaign.
The Erzurum offensive or Battle of Erzurum was a major winter offensive by the Imperial Russian Army on the Caucasus Campaign, during the First World War that led to the capture of the strategic city of Erzurum. The Ottoman forces, in winter quarters, suffered a series of unexpected reverses, which led to a Russian victory.
The Middle Eastern theatre of World War I saw action between 30 October 1914 and 30 October 1918. The combatants were, on one side, the Ottoman Empire, with some assistance from the other Central Powers; and on the other side, the British as well as troops from the British Dominions of Australia, Canada, and New Zealand, the Russians, and the French from among the Allied Powers. There were five main campaigns: the Sinai and Palestine, Mesopotamian, Caucasus, Persian, and Gallipoli campaigns.
The Caucasus campaign comprised armed conflicts between the Russian Empire and the Ottoman Empire, later including Armenia, Azerbaijan, Georgia, the Mountainous Republic of the Northern Caucasus, the German Empire, the Central Caspian Dictatorship, and the British Empire, as part of the Middle Eastern theatre during World War I. The Caucasus campaign extended from the South Caucasus to the Armenian Highlands region, reaching as far as Trabzon, Bitlis, Mush and Van. The land warfare was accompanied by naval engagements in the Black Sea.
The Battle of Erzincan was a Russian victory over the Ottoman Empire during the First World War.
Sarıkamış or Sarikamish is a town in Kars Province in the Eastern Anatolia Region of Turkey. It is the seat of Sarıkamış District. Its population is 15,260 (2022).
The Battle of Manzikert or Battle of Malazgirt took place during the Caucasus Campaign of World War I, over the period July 10–26, 1915. Even though losses were heavy on both sides, the Russians retreated north and the Turks retook Malazgirt then they further advanced towards Karakilise where they were defeated on 5–8 August at the Battle of Kara Killisse.
The defense of Van and in Russian Van operation was the armed resistance of the Armenian population of Van and Russian army against the Ottoman Empire's attempts to massacre the Ottoman Armenian population of the Van Vilayet in the 1915 Armenian genocide. Several contemporaneous observers and later historians have concluded that the Ottoman government deliberately instigated an armed Armenian resistance in the city and then used this insurgency as the main pretext to justify beginning the deportation and slaughter of Armenians throughout the empire. Witness reports agree that the Armenian posture at Van was defensive and an act of resistance to massacre. The self-defense action is frequently cited in Armenian genocide denial literature; it has become "the alpha and omega of the plea of 'military necessity'" to excuse the genocide and portray the persecution of Armenians as justified.
The Battle of Bitlis refers to a series of engagements in the summer of 1916 for the town of Bitlis and to a lesser extent nearby Muş, between Russian Imperial forces and their Ottoman counterparts. The town was the last stronghold of the Ottoman Empire preventing the Russians from entering Anatolia and Mesopotamia. Part of the battle is known as Battle of Muş
The Persian campaign or invasion of Iran was a series of military conflicts between the Ottoman Empire, British Empire and Russian Empire in various areas of what was then neutral Qajar Iran, beginning in December 1914 and ending with the Armistice of Mudros on 30 October 1918, as part of the Middle Eastern Theatre of World War I. The fighting also involved local Persian units, who fought against the Entente and Ottoman forces in Iran. The conflict proved to be a devastating experience for Persia. Over 2 million Persian civilians died in the conflict, mostly due to the Armenian genocide by the Ottoman regime and Persian famine of 1917–1919, influenced by British and Russian actions. The Qajar government's inability to maintain the country's sovereignty during and immediately after the First World War led to a coup d'état in 1921 and Reza Shah's establishment of the Pahlavi dynasty.
The Russian Caucasus Army of World War I was the Russian field army that fought in the Caucasus Campaign and Persian Campaign of World War I. It was renowned for inflicting heavy casualties on the opposing forces of the Ottoman Empire, particularly at the Battle of Sarikamish. It was also known for its extremely diverse ethnic composition, consisting of units from throughout the Russian Empire and both soldiers and officers from the many ethnic communities settled since the 1877-78 Russo-Turkish War in the militarily administered Kars Oblast in the Russian Transcaucasus. These included Georgians, Caucasus Greeks, and Armenians - the latter in particular strongly represented among both the soldiers and senior officers - as well as ethnic Russians and Ukrainians.
The Battle of Ardahan was fought between 25 December 1914 and 18 January 1915 and was an Ottoman military operation commanded by German Lt. Col. Stange to capture the city of Ardahan and cut the Russian link to Sarikamish–Kars line, supporting the Battle of Sarikamish. By 3 January 1915, Vorontsov-Dashkov achieved a decisive victory over the Ottoman forces at Ardahan.
The offensive of the Russian armies in October 1914 with the aim of capturing East Prussia after in Battle of Augustów (1914).
The Battle of Muş, also known as the Ognot campaign, took place during World War I in the southeastern Anatolian region of the Ottoman Empire. One of the commanders involved was Mustafa Kemal, who later became known as Atatürk, the founder of the Republic of Turkey. The battle resulted in a Russian victory. After extended fighting, the Russians captured the city of Muş and inflicted heavy casualties on the Ottoman Second Army, nearly destroying it.
Landing at Cape Domesnes was a Russian landing operation during World War I. It was the largest Russian landing force in the war, and, as a result, the Russians fulfilled their goals. Alexander Kolchak, famous for the Civil War, participated in the battle.
Battle of the Wierzbołów, was one of the largest battles of the first 16 days of the World War I, during which the parties were preparing to conduct full-scale operations.
Russian Empire 
Ottoman Empire 