The Aden Protectorate Levies (APL) was a military force recruited from indigenous tribal populations, for the local defence of the Aden Protectorate under British rule. The Levies were drawn from all parts of the Protectorate and were armed, trained and officered by the Indian Army, Royal Air Force and British Army at various stages in the history of the force. They used the Lahej emblem of crossed jambiyah as their badge.

Aden Colony, also the Colony of Aden, located in the south of contemporary Yemen, was a crown colony of the United Kingdom from 1937 to 1963. It consisted of the port of Aden and its immediate surroundings.