The Kingdom of Iraq under British Administration, or Mandatory Iraq (), was created in 1921, following the
1920 Iraqi Revolution against the proposed
British Mandate of Mesopotamia, and enacted via the 1922
Anglo-Iraqi Treaty and a 1924 undertaking by the United Kingdom to the League of Nations to fulfil the role as Mandatory Power.
Faisal ibn Husayn, who had been proclaimed
King of Syria by a
Syrian National Congress in
Damascus
Damascus ( , ; ) is the capital and List of largest cities in the Levant region by population, largest city of Syria. It is the oldest capital in the world and, according to some, the fourth Holiest sites in Islam, holiest city in Islam. Kno ...
in March 1920, was
ejected by the French in July of the same year. Faisal was then granted by the British the territory of Iraq, to rule it as a kingdom, with the British
Royal Air Force
The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
(RAF) retaining certain military control, but , the territory remained under British administration until 1932.
The civil government of postwar
Iraq
Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...
was headed originally by the
High Commissioner,
Sir Percy Cox, and his deputy,
Colonel
Colonel ( ; abbreviated as Col., Col, or COL) is a senior military Officer (armed forces), officer rank used in many countries. It is also used in some police forces and paramilitary organizations.
In the 17th, 18th, and 19th centuries, a colon ...
Arnold Wilson. British
reprisals after the capture and killing of a British officer in
Najaf
Najaf is the capital city of the Najaf Governorate in central Iraq, about 160 km (99 mi) south of Baghdad. Its estimated population in 2024 is about 1.41 million people. It is widely considered amongst the holiest cities of Shia Islam an ...
failed to restore order. The British occupiers faced the growing strength of the nationalists, who continued to resist against the British authority. British administration had yet to be established in
Iraqi Kurdistan
Iraqi Kurdistan or Southern Kurdistan () refers to the Kurds, Kurdish-populated part of northern Iraq. It is considered one of the four parts of Greater Kurdistan in West Asia, which also includes parts of southeastern Turkey (Northern Kurdist ...
.
History
Early unrest
Three important anticolonial secret societies had been formed in Iraq during 1918 and 1919. The League of the Islamic Awakening () was organized at
Najaf
Najaf is the capital city of the Najaf Governorate in central Iraq, about 160 km (99 mi) south of Baghdad. Its estimated population in 2024 is about 1.41 million people. It is widely considered amongst the holiest cities of Shia Islam an ...
. The Muslim National League () was formed with the object of organizing and mobilizing the population for major resistance. In February 1919, in
Baghdad
Baghdad ( or ; , ) is the capital and List of largest cities of Iraq, largest city of Iraq, located along the Tigris in the central part of the country. With a population exceeding 7 million, it ranks among the List of largest cities in the A ...
, a coalition of
Shia
Shia Islam is the second-largest branch of Islam. It holds that Muhammad designated Ali ibn Abi Talib () as both his political successor (caliph) and as the spiritual leader of the Muslim community (imam). However, his right is understood ...
merchants,
Sunni
Sunni Islam is the largest branch of Islam and the largest religious denomination in the world. It holds that Muhammad did not appoint any successor and that his closest companion Abu Bakr () rightfully succeeded him as the caliph of the Mu ...
teachers, and civil servants, Sunni and Shia
ulama
In Islam, the ''ulama'' ( ; also spelled ''ulema''; ; singular ; feminine singular , plural ) are scholars of Islamic doctrine and law. They are considered the guardians, transmitters, and interpreters of religious knowledge in Islam.
"Ulama ...
, and Iraqi officers formed the
Guardians of Independence (). The Istiqlal had member groups in
Karbala
Karbala is a major city in central Iraq. It is the capital of Karbala Governorate. With an estimated population of 691,100 people in 2024, Karbala is the second largest city in central Iraq, after Baghdad. The city is located about southwest ...
, Najaf,
Kut, and
Hillah
Hillah ( ''al-Ḥillah''), also spelled Hilla, is a city in central Iraq. On the Hilla branch of the Euphrates River, it is south of Baghdad. The population was estimated to be about 455,700 in 2018. It is the capital of Babylon Province and is ...
.
The Grand
Mujtahid
''Ijtihad'' ( ; ' , ) is an Islamic legal term referring to independent reasoning by an expert in Islamic law, or the thorough exertion of a jurist's mental faculty in finding a solution to a legal question. It is contrasted with '' taqlid'' (i ...
of Karbala,
Imam Shirazi, and his son, Mirza Muhammad Riza, began to organize the insurgent effort. Shirazi then issued a ruling, and he called for a resistance against the British. By July 1920,
Mosul
Mosul ( ; , , ; ; ; ) is a major city in northern Iraq, serving as the capital of Nineveh Governorate. It is the second largest city in Iraq overall after the capital Baghdad. Situated on the banks of Tigris, the city encloses the ruins of the ...
was in rebellion against British rule, and the armed resistance moved south down the
Euphrates
The Euphrates ( ; see #Etymology, below) is the longest and one of the most historically important rivers of West Asia. Tigris–Euphrates river system, Together with the Tigris, it is one of the two defining rivers of Mesopotamia (). Originati ...
River valley. The southern tribes, who cherished their long-held political autonomy, needed little inducement to join in the fray. They did not cooperate in an organized effort against the British, however, which limited the effect of the revolt.
The
Iraqi revolt of 1920 was a watershed event in contemporary Iraqi history. For the first time, Sunnis and Shias, tribes and cities, were brought together in a common effort. In the opinion of
Hanna Batatu, author of a seminal work on Iraq, the building of a nation-state in Iraq depended upon two major factors: the integration of Shias and Sunnis into the new body politic and the successful resolution of the age-old conflicts between the tribes and the riverine cities and among the tribes themselves over the food-producing flatlands of the
Tigris
The Tigris ( ; see #Etymology, below) is the eastern of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of the Armenian Highlands through the Syrian Desert, Syrian and Arabia ...
and the
Euphrates
The Euphrates ( ; see #Etymology, below) is the longest and one of the most historically important rivers of West Asia. Tigris–Euphrates river system, Together with the Tigris, it is one of the two defining rivers of Mesopotamia (). Originati ...
. The 1920 rebellion brought these groups together, if only briefly; this constituted an important first step in the long and arduous process of forging a
nation-state
A nation state, or nation-state, is a political entity in which the state (a centralized political organization ruling over a population within a territory) and the nation (a community based on a common identity) are (broadly or ideally) con ...
out of Iraq's conflict-ridden social structure. The
Assyrian Levies, a military force under British command, participated in the
Kirkuk Massacre of 1924 of Kurds, Arabs, and Turkomen. (See
Simele Massacres of 1933)
On 1 October 1922, the
Royal Air Force
The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
(RAF) elements stationed in Iraq were reorganized into the
RAF Iraq Command
Iraq Command was the Royal Air Force (RAF) commanded British Armed Forces, inter-service Command (military formation), command in charge of United Kingdom, British forces in Iraq in the 1920s and early 1930s, during the period of the British Man ...
, which came about partially as a result of the 1920 revolt. This new command was primarily designed to suppress any threats to the
Hashemite monarchy. Air control was considered by the
British government
His Majesty's Government, abbreviated to HM Government or otherwise UK Government, is the central government, central executive authority of the United Kingdom of Great Britain and Northern Ireland. as a more cost-effective method of controlling large areas of territory than land forces, an idea that was heavily promoted by RAF officer
Hugh Trenchard.
During the 1920s and 30s, the RAF Iraq Command participated in the suppression of numerous protests and revolts against the Hashemite monarchy. Historian
Elie Kedourie noted that "the North
f Iraqas a whole had to be coerced
nto submissionby the Royal Air Force." When the Kurdish leader Sheikh Mahmud launched an armed rebellion, the British used the newly established Iraqi army to suppress the revolt, but that proved ineffective. The British then resorted to deploying the RAF, which suppressed the revolt. In the same period, rebellions by the Shia in the South were also suppressed by the RAF.
Coronation of Faisal
At the
Cairo Conference
Cairo ( ; , ) is the Capital city, capital and largest city of Egypt and the Cairo Governorate, being home to more than 10 million people. It is also part of the List of urban agglomerations in Africa, largest urban agglomeration in Africa, L ...
of March 1921, the British set the parameters for Iraqi political life that were to continue until the
1958 revolution; they chose a
Hashemite
The Hashemites (), also House of Hashim, are the Dynasty, royal family of Jordan, which they have ruled since 1921, and were the royal family of the kingdoms of Kingdom of Hejaz, Hejaz (1916–1925), Arab Kingdom of Syria, Syria (1920), and Kingd ...
,
Faisal ibn Husayn, son of
Sherif Hussein ibn Ali former
Sharif of Mecca
The Sharif of Mecca () was the title of the leader of the Sharifate of Mecca, traditional steward of the Holiest sites in Islam, Islamic holy cities of Mecca and Medina. The term ''sharif'' is Arabic for "noble", "highborn", and is used to desc ...
as Iraq's first King; they established an Iraqi army (but kept
Iraq Levies under direct British command); and they proposed a new treaty. To confirm Faisal as Iraq's first monarch, a
one-question plebiscite was carefully arranged that had a return of 96 percent in his favor. The British saw in Faisal a leader who possessed sufficient nationalist and Islamic credentials to have broad appeal, but who also was vulnerable enough to remain dependent on their support. Faisal traced his
descent from the family of
Muhammad
Muhammad (8 June 632 CE) was an Arab religious and political leader and the founder of Islam. Muhammad in Islam, According to Islam, he was a prophet who was divinely inspired to preach and confirm the tawhid, monotheistic teachings of A ...
. His ancestors held political authority in the holy cities of
Mecca
Mecca, officially Makkah al-Mukarramah, is the capital of Mecca Province in the Hejaz region of western Saudi Arabia; it is the Holiest sites in Islam, holiest city in Islam. It is inland from Jeddah on the Red Sea, in a narrow valley above ...
and
Medina
Medina, officially al-Madinah al-Munawwarah (, ), also known as Taybah () and known in pre-Islamic times as Yathrib (), is the capital of Medina Province (Saudi Arabia), Medina Province in the Hejaz region of western Kingdom of Saudi Arabia, ...
since the 10th century. The British believed these credentials would satisfy traditional Arab standards of political legitimacy; moreover, the British thought Faisal would be accepted by the growing Iraqi nationalist movement because of his role in the 1916
Arab Revolt
The Arab Revolt ( ), also known as the Great Arab Revolt ( ), was an armed uprising by the Hashemite-led Arabs of the Hejaz against the Ottoman Empire amidst the Middle Eastern theatre of World War I.
On the basis of the McMahon–Hussein Co ...
against the Turks, his achievements as a leader of the Iraq emancipation movement, and his general leadership qualities. Faisal was instated as the Monarch of Iraq after the Naquib of Baghdad was disqualified as being too old (80 yrs) and Sayid Talib (a prominent Iraqi from the province of Basra) was deported on trumped up charges by the British. The voting was far from a reflection of the true feelings of the Iraqi people. Nevertheless, Faisal was considered the most effective choice for the throne by the British government.

The final major decision taken at the Cairo Conference related to the
Anglo-Iraqi Treaty of 1922. Faisal was under pressure from the nationalists and the anti-British
mujtahid
''Ijtihad'' ( ; ' , ) is an Islamic legal term referring to independent reasoning by an expert in Islamic law, or the thorough exertion of a jurist's mental faculty in finding a solution to a legal question. It is contrasted with '' taqlid'' (i ...
s of Najaf and Karbala to limit both British influence in Iraq and the duration of the treaty. Recognizing that the monarchy depended on British support— and wishing to avoid a repetition of his experience in Syria – Faisal maintained a moderate approach in dealing with the UK. The treaty, which had been originally set as a 20-year engagement but later reduced to four years, was ratified in June 1924; it stated that the king would heed British advice on all matters affecting British interests and on fiscal policy as long as Iraq had a
balance of payments
In international economics, the balance of payments (also known as balance of international payments and abbreviated BOP or BoP) of a country is the difference between all money flowing into the country in a particular period of time (e.g., a ...
deficit with the UK, and that British officials would be appointed to specified posts in 18 departments to act as advisers and inspectors. A subsequent financial agreement, which significantly increased the financial burden on Iraq, required Iraq to pay half the cost of supporting British resident officials, among other expenses. British obligations under the new treaty included providing various kinds of aid, notably military assistance, and proposing Iraq for membership in the League of Nations at the earliest moment. In effect, the treaty ensured that Iraq would remain politically and economically dependent on the UK. While unable to prevent the treaty, Faisal clearly felt that the British had gone back on their promises to him.
The British decision at the Cairo Conference to establish an indigenous Iraqi army was significant. In Iraq, as in most of the developing world, the military establishment has been the best organized institution in an otherwise weak political system. Thus, while Iraq's body politic crumbled under immense political and economic pressure throughout the monarchic period, the military gained increasing power and influence; moreover, because the officers in the new army were by necessity Sunnis who had served under the Ottomans, while the lower ranks were predominantly filled by Shia tribal elements, Sunni dominance in the military was preserved.
Later years
The
Anglo-Iraqi Treaty of 1930 provided for a "close alliance," for "full and frank consultations between the two countries in all matters of
foreign policy
Foreign policy, also known as external policy, is the set of strategies and actions a State (polity), state employs in its interactions with other states, unions, and international entities. It encompasses a wide range of objectives, includ ...
," and for mutual assistance in case of war. Iraq granted the British the use of air bases near
Basra
Basra () is a port city in Iraq, southern Iraq. It is the capital of the eponymous Basra Governorate, as well as the List of largest cities of Iraq, third largest city in Iraq overall, behind Baghdad and Mosul. Located near the Iran–Iraq bor ...
and at
Habbaniyah and the right to move troops across the country. The treaty, of twenty-five years' duration, was to come into force upon Iraq's admission to the League of Nations.
With the signing of the 1930 Treaty and the settling of the
Mosul Question, Iraqi politics took on a new dynamic. The emerging class of Sunni and Shia landowning tribal sheikhs vied for positions of power with wealthy and prestigious urban-based Sunni families and with Ottoman-trained army officers and bureaucrats. Because Iraq's newly established political institutions were the creation of a foreign power, and because the concept of democratic government had no precedent in Iraqi history, the politicians in Baghdad lacked legitimacy and never developed deeply rooted constituencies. Thus, despite a constitution and an elected assembly, Iraqi politics was more a shifting alliance of important personalities and cliques than a
democracy
Democracy (from , ''dēmos'' 'people' and ''kratos'' 'rule') is a form of government in which political power is vested in the people or the population of a state. Under a minimalist definition of democracy, rulers are elected through competitiv ...
in the Western sense. The absence of broadly based political institutions inhibited the early nationalist movement's ability to make deep inroads into Iraq's diverse social structure.
The Mandatory administration continued to operate until 1932.
In 1936 and 1937 various protests and revolts broke out against the Iraqi government, with the main issues centering around agrarian issues and
conscription
Conscription, also known as the draft in the United States and Israel, is the practice in which the compulsory enlistment in a national service, mainly a military service, is enforced by law. Conscription dates back to antiquity and it conti ...
into the armed forces. These were suppressed by the Iraqi government with assistance from the RAF Iraq Command, with Kedourie writing that the "killing, it seems, was indiscriminate, and old men, women and children were the victims." An armed revolt which broke out in 1937 over agrarian issues and conscription was also "put down with the help of indiscriminate aerial bombing." During these disturbances, Shia religious leaders were expelled from Iraq due to being Persians. Kedourie describes the monarchy as despotic, with a record "full of bloodshed, treason and rapine" and "however pitiful its end we may know that it was implicit in its beginning."
In his assessment of the British mandate and the Iraqi monarchy, historians
Kanan Makiya
Kanan Makiya (born 1949) is an Iraqi-American academic and professor of Islamic and Middle Eastern Studies at Brandeis University. He gained international attention with ''Republic of Fear'' (1989), which became a best-selling book after Saddam ...
considers the British mandate and its institutions more as "agents of modernisation" than colonialism:
Kedourie's judgement, however, is different:
If Makiya is referring to economic development in his account of the British modernising legacy in Iraq, an authoritative study demonstrates that Iraq's productivity in agriculture, the most important sector at the time, in fact declined from 275 kg per acre in 1920 to an average of 238 kg per acre between 1953 and 1958.
Under the British mandate a new ruling class of 'government shaikhs' was created. "Many of them
he Shaikhs reported Major Pulley to the British commissioner in Baghdad in 1920, "were small men of no account until we made them powerful and rich." The Civil Commissioner Wilson reported on his part that the Shaikhs "were in most cases directly dependent on the civil administration for the positions they held; realising that their positions entailed corresponding obligations, they co-operated actively with the political officers."
In a dispatch by a British official to London in 1928, there was a description of how the electoral system worked: the government's provincial governors were in fact election agents who drew up lists of those to be elected and of those who would do the electing. Elections to "the chamber of deputies and appointments to the senate," comments Keeourie, "were an additional weapon in the hands of the
government wherewith the better to control the country."
Independence
On 3 October 1932, the
Hashemite Kingdom of Iraq became an independent state. Ruled by the Hashemites, it lasted until 1958. However, Britain retained its military bases in Iraq, and British influence after independence resulted in instability for the monarchy. Before the monarchy's collapse in 1958, a series of coups took place in 1936 and 1941. The latter was followed by a brief British occupation.
Economy
Nomadic bedouin tribes within Iraq, which had previously traded all throughout the Middle East, became confined to trading only within the borders of the Mandate itself. This decision by the colonial administration proved economically troubling and devastating for the bedouins.
Oil concession
Before the collapse of the
Ottoman Empire
The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
, the British-controlled
Turkish Petroleum Company (TPC) had held concessionary rights to the Mosul ''
wilaya
A wilayah ( or ''wilāya'', plural ; Urdu, Pashto and ; ) is an administrative division, usually translated as "state", "province" or occasionally as "governorate". The word comes from the Arabic root "''w-l-y''", "to govern": a ''wāli''—"g ...
'' (province). Under the 1916
Sykes-Picot Agreement – an agreement in 1916 between Britain and France that delineated future control of the Middle East – the area would have fallen under French influence. In 1919, however, the French relinquished their claims to Mosul under the terms of the
Long-Berenger Agreement. The 1919 agreement granted the French a 25 percent share in the TPC as compensation.
Beginning in 1923, British and Iraqi negotiators held acrimonious discussions over the new oil concession. The major obstacle was Iraq's insistence on a 20 percent equity participation in the company; this figure had been included in the original TPC concession to the Turks and had been agreed upon at Sanremo for the Iraqis. In the end, despite strong nationalist sentiments against the concession agreement, the Iraqi negotiators acquiesced to it. The League of Nations was soon to vote on the disposition of Mosul, and the Iraqis feared that, without British support, Iraq would lose the area to Turkey. In March 1925, an agreement was concluded that contained none of the Iraqi demands. The TPC, now renamed the
Iraq Petroleum Company (IPC), was granted a full and complete concession for a period of seventy-five years.
Iraq: A Country Study
Helen Chapin Metz, in ''Iraq: Issues, Historical Background, Bibliography'', ed. Leon M. Jefferies, Nova Publishers, 2003, page 146
British High Commissioners
* 1920–1923: Major-General Sir Percy Cox
* 1923–1928: Sir Henry Dobbs
* 1928–1929: Brigadier-General Sir Gilbert Clayton
* 1929–1932: Lt. Colonel Sir Francis Humphrys
See also
* Guardians of Independence
*Mesopotamian campaign
The Mesopotamian campaign or Mesopotamian front () was a campaign in the Middle Eastern theatre of World War I fought between the British Empire, with troops from United Kingdom of Great Britain and Ireland, Britain, Australia and the vast major ...
*Ottoman Iraq
Ottoman Iraq () refers to the period of the history of Mesopotamia, Iraq when the region was ruled by the Ottoman Empire (1534–1920; with an interlude from 1704 to 1831 From Independence under the Mamluk dynasty (Iraq), Mamluk state of Iraq).Bef ...
*RAF Iraq Command
Iraq Command was the Royal Air Force (RAF) commanded British Armed Forces, inter-service Command (military formation), command in charge of United Kingdom, British forces in Iraq in the 1920s and early 1930s, during the period of the British Man ...
Notes
Sources
Further reading
* Barker, A. J.: ''The First Iraq War, 1914–1918: Britain's Mesopotamian Campaign'' (New York: Enigma Books, 2009).
* Fuccaro, Nelida: ''The Other Kurds'' (London: IB Tauris, 1999).
* Dodge, Toby: ''Inventing Iraq'' (2009).
* Fieldhouse, David K.: ''Western Imperialism in the Middle East, 1914–1958'' (2006).
* Fisk, Robert: ''The Great War for Civilisation: The Conquest of the Middle East'', (2nd ed. 2006).
* Jacobsen, Mark: "'Only by the Sword': British Counter‐insurgency in Iraq", in: ''Small Wars and Insurgencies'' 2, no. 2 (1991): pp. 323–63.
* Simons, Geoff: ''Iraq: From Sumer to Saddam'' (2nd ed. 1994).
* Sluglett, Peter: ''Britain in Iraq: Contriving King and Country, 1914–1932'' (2nd ed. 2007).
* Wright, Quincy (1931). " The Proposed Termination of the Iraq Mandate". ''American Journal of International Law'' 25(3): 436–446.
* Vinogradov, Amal: "The 1920 Revolt in Iraq Reconsidered: The Role of Tribes in National Politics," ''International Journal of Middle East Studies'' 3, no. 2 (1972): pp. 123–39.
{{DEFAULTSORT:Iraq, Mandatory
Mandatory Iraq
British military occupations
Former countries in West Asia
Iraq–United Kingdom relations
States and territories established in 1920
States and territories disestablished in 1932
Sykes–Picot Agreement
1920 establishments in Iraq
20th-century disestablishments in Iraq
Former countries of the interwar period