 Another "dummy" brigade was formed to make the Israelis believe it was a reserve brigade, thus deterring them from counterattacking into Transjordan.On 15 May, the Arab states entered the war, and Syrian, Iraqi, Jordanian and Egyptian contingents deployed in Palestine.Among these, the Jordanian expeditionary corps was mainly constituted by an elite mechanized force "encadrée" by British officers and named Arab Legion.