Key Facts
- Withdrawal date
- 30 November 1967
- British colonial presence
- 128 years and 10 months
- Last High Commissioner
- Sir Humphrey Trevelyan
- Last troops to leave
- Royal Engineers
- Independence declared after
- 11 hours after British departure
Strategic Narrative Overview
The Aden Emergency intensified through the mid-1960s as guerrilla attacks on British forces and internecine fighting between the NLF and FLOSY made the security situation untenable. The British government announced its intention to withdraw entirely by 1968. High Commissioner Sir Humphrey Trevelyan oversaw a rapid final handover, departing RAF Khormaksar on 30 November 1967 after a brief ceremony, with the Royal Engineers being the last military unit to leave.
01 / The Origins
Britain had controlled Aden since 1839, using it as a strategic coaling station and later a key military base east of Suez. By the early 1960s, Arab nationalist movements—chiefly the NLF and the Nasser-backed FLOSY—launched an insurgency known as the Aden Emergency, seeking to end colonial rule. British efforts to construct a stable Federation of South Arabia as a precursor to managed independence failed amid escalating violence and political instability.
03 / The Outcome
Eleven hours after the last British troops departed, the NLF declared the independence of South Yemen. The rival FLOSY movement continued to contest power but was defeated, reportedly with covert British support. The Federation of South Arabia and the Protectorate of South Arabia were both dissolved. South Yemen subsequently became the People's Democratic Republic of Yemen, the only Marxist state in the Arab world.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Sir Humphrey Trevelyan.
Side B
2 belligerents