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Aden Protectorate

Aden Protectorate
محمية عدن




Flag of Yemen

Location of the Aden Protectorate on the Arabian Peninsula.
Capital Not specified
Languages Arabic
Ottoman Turkish
Religion Islam
Political structure Protectorate
 •  Initial treaty 1869
 •  Federation formed 11 February 1959
 •  Disestablished 18 January 1963
Area 285,000 km² (110,039 sq mi)
Currency Rupee
Today part of  Yemen

The Aden Protectorate[1] (Arabic: محمية عدنMaḥmiyyat ‘Adan) was a British protectorate in southern Arabia which evolved in the hinterland of the port of Aden and in the Hadramaut following the conquest of Aden by Great Britain in 1839, and it continued until the 1960s. In 1940 it was divided for administrative purposes into the Western Protectorate and the Eastern Protectorate.[2] Today the territory forms part of the Republic of Yemen.


  • History 1
    • Informal beginnings 1.1
    • Formal treaties of protection 1.2
    • Polities 1.3
      • Eastern Protectorate 1.3.1
      • Western Protectorate 1.3.2
    • Advisory treaties 1.4
    • Challenges to the status quo 1.5
    • Federation and the end of the Protectorate 1.6
    • Aden Emergency 1.7
  • References 2
  • Further reading 3
  • External links 4


Informal beginnings

What became known as the Aden Protectorate was initially informal arrangements of protection with nine tribes in the immediate hinterland of the port city of Aden:

British expansion into the area was designed to secure the important port that was, at the time, governed from British India. From 1874, these protection arrangements existed with the tacit acceptance of the Ottoman Empire that maintained suzerainty over Yemen to the north and the polities became known collectively as the "Nine Tribes" or the "Nine Cantons."

Formal treaties of protection

Official map of the Aden Protectorate, 1948

Beginning with a formal treaty of protection with the Mahra Sultanate of Qishn and Socotra in 1886, Britain embarked on a slow formalisation of protection arrangements that included over 30 major treaties of protection with the last signed only in 1954. These treaties, together with a number of other minor agreements, created the Aden Protectorate that extended well east of Aden to Hadhramaut and included all of the territory that would become South Yemen except for the immediate environs and port of the colonial capital, Aden.

Aden with its harbour was the only area under full British sovereignty and, together with some offshore islands, was known as Aden Settlement (1839–1932), Aden Province (1932–1937), Aden Colony (1937–1963) and finally State of Aden (1963–1967).

In exchange for British protection, the rulers of the constituent territories of the Protectorate agreed not to enter into treaties with or cede territory to any other foreign power. In 1917, control of Aden Protectorate was transferred from the Government of India, which had inherited the British East India Company's interests in various princely states on the strategically important naval route from Europe to India, to the British Foreign Office. For administrative purposes, the protectorate was informally divided into the Eastern Protectorate (with its own Political Officer, a British advisor, stationed at Mukalla in Qu'aiti from 1937 to ca. 1967) and the Western Protectorate (with its own Political Officer, stationed at Lahej from 1 April 1937 to 1967), for some separation of administration.

In 1928, the British established Aden Command, under Royal Air Force leadership, to preserve the security of the Protectorate. It was renamed British Forces Aden in 1936 and was later known as British Forces Arabian Peninsula and then Middle East Command (Aden).[3]


The boundaries between the polities and even their number fluctuated over time. Some such as the Mahra Sultanate barely had any functioning administration.

Not included in the protectorate were Aden Colony and the insular areas of Perim, Kamaran, and Khuriya Muriya that accrued to it.

Eastern Protectorate

The Eastern Protectorate (ca. 230,000 km²) came to include the following entities (mostly in Hadhramaut):

Lahej, Western Protectorate c. 1910
Postage stamp of the Kathiri state of Sai'yun with portrait of Sultan Jafar bin Mansur

Western Protectorate

The Western Protectorate (ca. 55,000 km²) included:

Advisory treaties

In 1938, Britain signed an advisory treaty with the Qu'aiti sultan and, throughout the 1940s and 1950s, signed similar treaties with twelve other protectorate states. The following were the states with advisory treaties:

Aerial view of Mukalla, Eastern Protectorate, 1932
Postage stamp from the Qu'aiti state of Shihr and Mukalla with portrait of Sultan Salib bin Ghalib

Eastern Protectorate States

  • Kathiri
  • Mahra
  • Qu'aiti
  • Wahidi Balhaf

Western Protectorate States

  • Audhali
  • Beihan
  • Dhala
  • Haushabi
  • Fadhli
  • Lahej
  • Lower Aulaqi
  • Lower Yafa
  • Upper Aulaqi Sheikhdom
1940 cover of British controlled Aden protectorate passport.

These agreements allowed for the stationing of a Resident Advisor in the signatory states which gave the British a greater degree of control over their domestic affairs. This rationalised and stabilised the rulers' status and laws of succession but had the effect of ossifying the leadership and encouraging official corruption. Aerial bombardment and collective punishment were sometimes used against wayward tribes to enforce the rule of Britain's clients. British protection came to be seen as an impediment to progress, a view reinforced by the arrival of news of Arab nationalism from the outside world on newly available transistor radios.

Challenges to the status quo

Postage stamp with portrait of Queen Elizabeth II, 1953

British control was also challenged by King Ahmad bin Yahya of the Yemen to the north who did not recognise British suzerainty in South Arabia and had ambitions of creating a unified Greater Yemen. In the late 1940s and the early 1950s, Yemen was involved in a series of border skirmishes along the disputed Violet Line, a 1914 Anglo-Ottoman demarcation that served to separate Yemen from the Aden Protectorate.

In 1950, Kennedy Trevaskis, the Advisor for the Western Protectorate drew up a plan for the protectorate states to form two federations, corresponding to the two-halves of the protectorate. Although little progress was made in bringing the plan to fruition, it was considered a provocation by Ahmad bin Yahya. In addition to his role as king, he also served as the imam of the ruling Zaidi branch of Shi'a Islam. He feared that a successful federation in the Shafi'i Sunnite protectorates would serve as a beacon for discontented Shafi'ites who inhabited the coastal regions of Yemen. To counter the threat, Ahmad stepped up Yemeni efforts to undermine British control and, in the mid-1950s, Yemen supported a number of revolts by disgruntled tribes against protectorate states. The appeal of Yemen was limited initially in the protectorate but a growing intimacy between Yemen and the popular Arab nationalist president of Egypt Gamal Abdel Nasser and the formation of United Arab States increased its attraction.

Federation and the end of the Protectorate

Aden had been of interest to Britain as a link to British India and then, after the loss of most of Britain's colonies from 1945 and the disastrous Suez Crisis in 1956, as a valuable port for accessing crucial Middle Eastern oil. It had also been chosen as the new location for Middle East Command.

Nationalist pressure prodded the threatened rulers of the Aden Protectorate states to revive efforts at forming a federation and, on 11 February 1959, six of them signed an accord forming the Federation of Arab Emirates of the South. In the next three years, they were joined by nine others and, on 18 January 1963, Aden Colony was merged with the federation creating the new Federation of South Arabia. At the same time, the (mostly eastern) states that had not joined the federation became the Protectorate of South Arabia, thus ending the existence of the Aden Protectorate.

Aden Emergency

On 10 December 1963, a state of emergency was declared in the former protectorate and the newly-created State of Aden.

The Emergency was precipitated in large part by a wave of Arab nationalism spreading to the Arabian Peninsula and stemming largely from the Socialist and pan-Arabist doctrines of the Egyptian leader Gamel Abdel Nasser. The British, French, and Israeli invasion forces that had invaded Egypt following Nasser's nationalisation of the Suez Canal in 1956 had been forced to withdraw following intervention from both the United States and the Soviet Union.

Nevertheless, Nasser had then enjoyed limited success in spreading his pan-Arabist doctrines through the Arab world, with his 1958 attempt to unify Egypt and Syria as the United Arab Republic collapsing in a humiliating failure only 3 years later. A perceived anti-colonial uprising in Aden in 1963 provided another potential opportunity for his doctrines, though it is not clear to what extent Nasser directly incited the revolt among the Arabs in Aden, as opposed to the Yemeni guerrilla groups drawing inspiration from Nasser's pan-Arabist ideas but acting independently themselves.

By 1963 and in the ensuing years, anti-British guerrilla groups with varying political objectives began to coalesce into two larger, rival organisations: first the Egyptian-supported National Liberation Front (NLF) and then the Front for the Liberation of Occupied South Yemen (FLOSY), who attacked each other as well as the British.

Aden in 1965

By 1965, the RAF station (RAF Khormaksar) was operating 9 Squadrons. These included transport units with helicopters and a number of Hawker Hunter ground attack aircraft. These were called in by the army for strikes against positions when they would use "60 lb" high explosive rockets and their 30 mm Aden cannon.

Notable events include the Battle of Crater which brought Lt-Col Colin Campbell Mitchell (AKA. "Mad Mitch") to prominence. On 20 June 1967 there was a mutiny in the South Arabian Federation Army, which also spread to the police. Order was restored by the British, mainly due to the efforts of the 1st Battalion Argyll and Sutherland Highlanders, under the command of Lt-Col Mitchell.

Nevertheless, deadly guerrilla attacks particularly by the NLF soon resumed against British forces once again, with the British leaving Aden by the end of November 1967, earlier than had been planned by British Prime Minister Harold Wilson and without an agreement on the succeeding governance. Their enemies, the NLF, managed to seize power.


  1. ^ The plural (Aden Protectorates) is also frequently found since it was an amalgamation of sultanates, etc. that were separate protectorates.
  2. ^ Records of the British Administration in Aden, 1839-1967 (
  3. ^ Air of Authority – A History of RAF Organisation – Overseas Commands – Middle East and Mediterranean

Further reading

  • Almanach de Bruxelles
  • Paul Dresch. A History of Modern Yemen.Cambridge, UK: Cambridge University Press, 2000.
  • R.J. Gavin. Aden Under British Rule: 1839–1967. London: C. Hurst & Company, 1975.
  • Tom Little. South Arabia: Arena of Conflict. London: Pall Mall Press, 1968.
  • WorldStatesmen – Yemen-States of the Aden Protectorates

External links

  • Official Website of the Al-Quaiti Royal Family of Hadhramaut
  • Map of Arabia (1905–1923) including the states of Aden Protectorate
  • British-Yemeni Society
  • Aden Veterans Association
  • Historical Flags of Yemen

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