 The German , Austrian and Ottoman attack on Mount Royston was checked to the north by the 3rd and 6th Light Horse Regiments ( 1st and 2nd Light Horse Brigades ) , and under constant bombardment from the horse artillery and the infantry 's heavy artillery of the 52nd ( Lowland ) Division . At 10 : 00 , the front held by the two light horse brigades faced south from a point 700 yards ( 640 m ) northwest of No. 22 Redoubt north of Wellington Ridge to the sand hills north of Mount Royston . As the line had fallen back , the 2nd and 3rd Light Horse Regiments ( 1st Light Horse Brigade ) had come in between the 6th and 7th Light Horse Regiments ( 2nd Light Horse Brigade ) ; from right to left , the line was now held by the 6th , 3rd , 2nd and 7th Light Horse and the Wellington Mounted Rifles Regiments , while 1 mile ( 1 @.@ 6 km ) north north @-@ west of Mount Royston , " D " Squadron of the Royal Gloucestershire Hussars ( a regiment in the 5th Mounted Brigade ) held its ground . 
