 Complete the following phrase:  From 6 May 1941 the brigade, together with a battalion of infantry from the Essex Regiment, a mechanised regiment from the Arab Legion and supporting artillery was organised as Habforce for operations in Iraq including the relief of the base at RAF Habbaniya and the occupation of Baghdad. Following this, in July 1941 it was placed under the command of I Australian Corps and was involved in operations against the Vichy French in 