The Ottoman-Qajar War was fought between Qajar Empire and the Ottoman Empire

Ottoman Empire

The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

  from 1821 to 1823.

After severe losses in Georgia

Georgia (country)

Georgia is a sovereign state in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded to the west by the Black Sea, to the north by Russia, to the southwest by Turkey, to the south by Armenia, and to the southeast by Azerbaijan. The capital of...

 during the Russo-Persian War of 1804-13, Crown Prince Abbas Mirza

Abbas Mirza

Prince, Field-Marshal Abbas Mirza born Amol city , was a Qajar crown prince of Persia. He developed a reputation as a military commander during wars with Russia and the Ottoman Empire, as an early modernizer of Persia's armed forces and institutions, and for his death before his father, Fath Ali...

 (1783-1833) of Persia vowed to modernize his armies. He sent Persians to England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 to learn Western military techniques and invited British officers to train his troops, especially newly introduced infantry. Ottoman incursions into Iran's Azerbaijan region under the pretense of punishing rebellious tribesmen led to declaration of war in 1821. Abbas Mirza

Abbas Mirza

Prince, Field-Marshal Abbas Mirza born Amol city , was a Qajar crown prince of Persia. He developed a reputation as a military commander during wars with Russia and the Ottoman Empire, as an early modernizer of Persia's armed forces and institutions, and for his death before his father, Fath Ali...

 attacked eastern Anatolia

Anatolia

Anatolia is a geographic and historical term denoting the westernmost protrusion of Asia, comprising the majority of the Republic of Turkey...

 (Turkey

Turkey

Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

) in 1821. Ottoman and Persian forces met in the Lake Van

Lake Van

Lake Van is the largest lake in Turkey, located in the far east of the country in Van district. It is a saline and soda lake, receiving water from numerous small streams that descend from the surrounding mountains. Lake Van is one of the world's largest endorheic lakes . The original outlet from...

 region. The war culminated in Persian victory at the Battle of Erzurum

Battle of Erzurum (1821)

The Battle of Erzurum occurred in 1821 as part of the Ottoman-Persian War of 1821-1823. The Persians were heavily outnumbered with 30,000 men and led by Abbas Mirza against the Turks with 50,000 men. Abbas Mirza's Nezam-e Jadid successfully held out against the Ottoman new army ....

 in 1821, where Abbas Mirza's army routed a superior Ottoman force. Peace did not come until the Treaty of Erzurum

Treaty of Erzurum

Treaty of Erzurum refers to either of two treaties, in 1823 and 1847, that settled boundary disputes between the Ottoman Empire and Iran.- First Treaty :...

two years later; both sides recognized the previous borders, with no territorial changes.