▁the ▁Al - Fa iss ali ▁army ▁to ▁join ▁his ▁forces ▁in ▁Ma ' an . ▁His ▁calls ▁received ▁much ▁attention ▁in ▁the ▁Arab ▁world ▁as ▁several ▁prominent ▁Arab ▁national ists ▁and ▁other ▁Arab ▁princes ▁joined ▁his ▁campaign ; ▁these ▁later ▁formed ▁the ▁emb ry onic ▁force ▁of ▁the ▁Arab ▁leg ion . ▁ ▁When ▁Prince ▁Abd ul lah ▁came ▁to ▁power ▁in ▁the ▁Em ir ate ▁of ▁Trans j ord an , ▁the ▁Jordan ian ▁Ar med ▁Forces ▁included : ▁G endar mer ie ▁( D ar ak ) ▁force ▁of ▁ 4 0 0 ▁men . ▁A ▁mobile ▁( main ly ▁caval ry ) ▁force ▁of ▁ 1 5 0 ▁men ▁and ▁horses . ▁A ▁regular ▁Army ▁batt alion ▁of ▁some ▁ 2 0 0 ▁inf antry men . ▁A ▁cam el ry ▁of ▁ 1 0 0 ▁men . ▁An ▁Arab ▁force , ▁which ▁was ▁probably ▁the ▁batt alion ▁that ▁had ▁accompanied ▁prince ▁Abd ul lah ▁to ▁Am man ▁from ▁Ma ' an . ▁ ▁R oles ▁of ▁Military ▁Form ations ▁in ▁Jordan ▁from ▁the ▁Foundation ▁of ▁the ▁Em ir ate ▁until ▁the ▁ 1 9 4 8 ▁Arab – Is ra eli ▁War : ▁Trans j ord an ▁Front ier ▁Force : ▁It ▁had ▁played ▁an ▁important ▁role ▁for ▁the ▁United ▁Kingdom ▁during ▁World ▁War ▁II , ▁as ▁it ▁provided ▁protection ▁for ▁British ▁lines ▁of ▁communication ▁extending ▁from ▁Ira q ▁to ▁Soviet ▁Union . ▁It ▁also ▁took ▁part ▁in ▁the ▁fighting ▁against ▁the ▁French ▁forces ▁in ▁Sy ria .