Imperial Iranian Army

Imperial Iranian Army
Unit name	Imperial Iranian Army
Native name	ارتش شاهنشاهی ایران
Caption	Emblem of the Imperial Iranian Army
Dates	1925–1979
Country	Imperial State of Iran
Allegiance	Mohammad Reza Pahlavi
Type	Army
Role	Land warfare
Size	285,000 (1979 peak)
Garrison	Tehran
Garrison label	Headquarters
Battles	Anglo-Soviet invasion of Iran, Iran crisis of 1946, 1974–75 Shatt al-Arab conflict
Notable commanders	Gholam-Ali Oveissi, Bahram Aryana, Fereydoun Jam

Imperial Iranian Army. The ground warfare branch of the Imperial Armed Forces of Iran from the establishment of the Pahlavi dynasty in 1925 until the Iranian Revolution in 1979. Under the direct patronage of Reza Shah and later his son Mohammad Reza Pahlavi, it was transformed from a disparate collection of tribal forces into a formidable, modern military institution intended to project Iran's power and safeguard the monarchy. Its development was heavily influenced by foreign military missions, extensive arms purchases, and a deep institutional loyalty to the Pahlavi dynasty, culminating in it becoming one of the largest and most technologically advanced armies in the Middle East by the 1970s.

History

The army's modern foundations were laid by Reza Shah following his ascent to power, who dissolved the previous Persian Cossack Brigade and other quasi-independent units to create a centralized, national force. Early development was heavily assisted by advisory missions from the Imperial German Army and later the United States Army through the U.S. Military Mission to Iran. During World War II, the army was overwhelmed during the Anglo-Soviet invasion of Iran, leading to the abdication of Reza Shah. Under Mohammad Reza Pahlavi, it was rebuilt and saw action suppressing separatist republics in the Iran crisis of 1946 in Azerbaijan and Kurdistan. The 1953 coup, supported by the CIA and MI6, which restored the Shah to power, cemented the army's role as the monarchy's ultimate guarantor. Subsequent decades witnessed exponential growth funded by oil revenues, particularly after the 1973 oil price shock.

Organization and structure

The army was organized into several corps and divisions, headquartered in Tehran with major commands distributed across the country. Key formations included the Imperial Guard Brigade, a elite unit dedicated to protecting the Shah, and several armored divisions equipped with modern main battle tanks. The structure was modeled largely on American lines, with a clear chain of command leading directly to the Monarch as the Supreme Commander. It maintained a significant army aviation wing for transport and reconnaissance. The Imperial Iranian Ground Forces worked in conjunction with the Imperial Iranian Navy and the Imperial Iranian Air Force, with overall coordination managed by the Imperial Armed Forces joint staff.

Equipment and technology

By the 1970s, the army possessed one of the most sophisticated arsenals in the region, sourced almost exclusively from the United States and the United Kingdom. Its armored corps was equipped with nearly 900 M60A1 and over 400 Chieftain main battle tanks. Artillery units fielded advanced systems like the M109A1 self-propelled howitzer. The infantry utilized M113 armored personnel carriers and large numbers of AH-1J SeaCobra attack helicopters. A significant portion of the national budget was dedicated to purchasing cutting-edge technology, including TOW anti-tank guided missiles and sophisticated communications and surveillance equipment from American firms like Bell Helicopter and Northrop Corporation.

Major conflicts and operations

While largely untested in large-scale interstate war, the army engaged in several significant military operations. Its first major post-war action was the successful suppression of the Republic of Mahabad and the Azerbaijan People's Government in 1946. It played a central role in the 1974–75 Shatt al-Arab conflict against Iraq, utilizing its superior equipment to gain a tactical advantage. The army was also perpetually deployed in internal security roles, notably in combating Marxist and Islamist insurgents in the Kurdish regions and urban centers during the 1970s. Its most extensive domestic operation was its failed attempt to quell the nationwide protests during the Iranian Revolution.

Relationship with the Pahlavi dynasty

The army was intrinsically linked to the Pahlavi dynasty, serving as its principal pillar of support. The Shah cultivated intense personal loyalty within the senior officer corps, with promotions and commands often tied to fealty rather than solely merit. High-ranking officers like Gholam-Ali Oveissi and Bahram Aryana were deeply entrenched in the political establishment. The institution benefited enormously from royal patronage, receiving the lion's share of the military budget. This symbiosis was highlighted during state ceremonies like the annual Tajrish Parade and the 2,500-year celebration at Persepolis, where the army's might was displayed as an extension of the monarchy's glory and ancient Persian heritage.

Dissolution and legacy

The army's collapse during the Iranian Revolution of 1979 was rapid and total. Crippled by mass desertions, defections to revolutionaries, and a decisive order from Ayatollah Khomeini for soldiers to abandon their posts, its structure disintegrated. Following the monarchy's fall, the new Islamic Republic systematically purged the officer corps, executing senior commanders like Nematollah Nassiri and Mehdi Rahimi. Its equipment, facilities, and remaining personnel formed the nucleus of the new Islamic Republic of Iran Army, though its ideological foundation was utterly transformed. The legacy of the Imperial Iranian Army endures as a symbol of the Pahlavi dynasty's modernizing ambitions and its ultimate vulnerability when confronted with a popular revolutionary movement.

Category:Military of Iran Category:Disbanded armies Category:20th century in Iran