Hosseinpour graduated in 1910 from the academy of the
Persian Cossack Brigade, as one of its fourth graduating class. He was a classmate of the future General Fazllollah Zahedi (who became Prime Minister under Shah
Mohammad Reza Shah Pahlavi in 1953) and Colonel Mehdi Gholi Tajbakhsh. On graduation from the academy, he performed his military duties under Rouhoullah Mirza for about two years and was then appointed Commander to the armies of the Iranian provinces of
Azerbaijan and
Kurdistan. He was later transferred to the Cavalry Division of the Persian Cossack Army and took part in
World War I, during which he held the rank of lieutenant. At the end of the war, he was promoted to major. Along with a number of other Cossack commanders, Hosseinpour was a founding member of the new Imperial Iranian Armed Forces during the reign of
Reza Shah Pahlavi. He headed the Cavalry Division in the February 21, 1921,
coup headed by Reza Shah. He was one of a number of officers who reached and secured
Tehran. Tehran was completely surrounded by a huge canal for protection against potential military invasion and robbers. A tall wall also encircled the city, with twelve huge metal gates that were locked at night and protected by military guards. The military force headed by the coup officers left
Karaj, a town about 40 km from Tehran, and arrived at the Ghazvin Gate (close to the present Mehrabad International Airport). When Hosseinpour reached the gate, he told the military officers guarding it that all the other gates had already been taken and that it was in their best interests to surrender. (second row, first left), shown with white circles around their heads, with other commanders who carried out the 1921 Coup The guards surrendered and opened the gate, and the army entered the city without any bloodshed and secured the capital. A few days later, Hossienpour was promoted to colonel and appointed (with the cooperation of a few other top military commanders) to convert and create the modern Imperial Iranian Army Ground Forces, as head of the Cavalry Division based at the Abbas Abad military headquarters. A military medal called
Sevoum Hoot, or
Sevvoum Esfand, was awarded to the participating commanders and officers around 1928. Hosseinpour retired from the Imperial Iranian Army at the age of around 60 and spent the rest of his life monitoring the affairs of his villages and estates and engaging in philanthropic activities.
Command posts During his military career, Hosseinpour held the following military commands: • Commander of the Cavalry Division • Commander of the Army of the
Azerbaijan Province • Commander of the Army of the
Kerman Province • Commander of the Army of the
Kurdistan Province • Head of the Imperial Iranian Army Juridical Tribunal • Chief Military Advisor to the Imperial Iranian Ground Forces
Military medals Hosseinpour was awarded military medals including: •
Coup of the Sevvoum Esfand Medal •
Sepah Medal •
Zoulfaghar Medal ==Personal life==