Having been held south of Romani, the German and Ottoman force attempted a further outflanking manoeuvre to the west, concentrating 2,000 troops around Mount Royston another sand dune, south-west of Romani. At 05:15, the Ottoman 31st Infantry Regiment pushed forward; then the 32nd and the 39th Infantry Regiments swung around the left and into the British rear. This outflanking movement was steadily progressing along the slopes of Mount Royston and turning the right of the 2nd Light Horse Brigade, whose third regiment, the Wellington Mounted Rifles, was now also committed to the front line.