The Arab Legion was the police force, then regular army, of the Emirate of Transjordan, a British protectorate, in the early part of the 20th century, and then of the Hashemite Kingdom of Jordan, an independent state, with a final Arabization of its command taking place in 1956, when British senior officers were replaced by Jordanian ones.
During World War II, the Arab Legion took part in the British war effort against pro-Axis forces in the Mediterranean and Middle East Theatre. By then, the force had grown to 1,600 men.
The Legion, part of Iraqforce, contributed significantly in the Anglo-Iraqi War and in the Syria-Lebanon campaign, two decisive early victories for the Allies.https://en.wikipedia.org/wiki/Arab_Legion
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