On March 22, 1946, the British Government announced the conclusion of a Treaty of Alliance with Transjordan, which recognized Transjordan as an independent Kingdom, and the Emir Abdullah as its sovereign. In an annex to the Treaty, provision was made for British bases in Transjordan and the training of the armed forces of that country by British military personnel.
Source: The British Government announced the conclusion of a Treaty of Alliance with Transjordan: Nation