 He then briefly commanded 1st Cavalry Division again in 1941 before returning to the command of the 4th Cavalry Brigade.During the Anglo-Iraqi War in May 1941, Kingstone was under the command of Major General J. G. W. Clark and was part of his relieving "Habforce" which included the 4th Cavalry Brigade, a battalion of The Essex Regiment, the Arab Legion Mechanised Regiment, a field artillery battery and a troop of anti-tank guns.Kingstone commanded a flying column named "Kingcol" in his honor.