Abbas Mirza, born on August 20, 1789, was a prominent figure in Iranian history, serving as the Qajar crown prince during the reign of his father, Fath-Ali Shah Qajar. His early life was marked by the tumultuous conflicts between Iran and the Russian Empire, which shaped his military and political career. Appointed as the governor of the strategically important Azerbaijan province, he was thrust into the forefront of military engagements, particularly during the first and second Russo-Iranian wars from 1804 to 1813 and 1826 to 1828.
In 1799, Abbas Mirza was designated as the crown prince and given the title of Nayeb-al-saltana, which positioned him as a key player in the Iranian military hierarchy. He commanded forces against the Russian military, facing numerous commanders in various battles, although ultimately, Iran suffered defeats that led to the signing of the treaties of Gulistan and Turkmenchay, resulting in significant territorial losses.
In addition to his military endeavors, Abbas Mirza is recognized for initiating Iran's first reform and modernization efforts, collaborating with notable ministers such as Mirza Bozorg Qa'em-Maqam and Abol-Qasem Qa'em-Maqam. His leadership extended beyond the Russian conflicts; during the interlude between the Russo-Iranian wars, he engaged in a joint military campaign against the Ottoman Empire alongside his brother, Mohammad-Ali Mirza Dowlatshah, culminating in the Treaty of Erzurum in 1823.
In a bid to reclaim lost prestige, Abbas Mirza launched an invasion in 1832, targeting regions east and northeast of Mashhad. His health deteriorated over time, and he received medical care from both Western and Iranian physicians. Abbas Mirza passed away on October 25, 1833, in Mashhad. His legacy continued through his son, Mohammad Mirza, who succeeded him as Mohammad Shah Qajar in 1834.