The Transjordan Frontier Force (TJFF) was established at Sarafand on 1 April 1926 with a cadre drawn from the Arab Legion and quickly grew to three cavalry squadrons, each of 120 men each, and an infantry unit. Its first commander was Lieutenant-Colonel FW Bewsher, DSO, OBE, MC,Other units, such as a camel squadron and mechanised units, were added subsequently. The TJFF replaced the disbanded British Gendarmerie which previously had the task of protecting Transjordan's borders.