 Complete the following phrase:  While A Squadron was being rebuilt, B and D Squadrons joined a squadron from the Worcestershire Hussars to form a composite regiment within the 5th Mounted Brigade. On 4 August, D Squadron, detached to the 42nd East Lancashire Infantry Division, played a conspicuous role in the Battle of Romani when it plugged and held for three hours a dangerous gap on the initiative of its commander, Major Charles Turner, for which he was awarded the Distinguished Service Order DSO. The squadron rejoined the composite regiment after the 5th Mounted Brigade arrived in support, and when the Anzac and British mounted brigades counter-attacked in the afternoon, the regiment took a ridge at the gallop and subsequently captured 500 prisoners, a battery of four guns and two machine guns. For the rest of the battle, the 5th Mounted Brigade came under command of the ANZAC Mounted Division and took part in the capture of Qatia and the pursuit of the enemy to Bir el Abd. British Empire forces continued to advance across the Sinai, and the regiment was next in action on 9 January 1917, in the 