The 8th Mounted Brigade (Yeomanry Mounted Division), temporarily attached to the 53rd (Welsh) Division, relieved the 4th Light Horse Brigade at 17:25 on 26 October, when they took over the 14 miles (23 km)-long outpost line covering the railway construction to Karm.

This line ran from el Buqqar, to Hill 720 and on to Hill 630, stretching along the Wadi Hanafish and the Wadi esh Sheria to a point south of El Mendur.
Most of the left section stretching north, was lightly held by standing patrols strongly supported in the rear, by an entrenched infantry brigade of the 53rd (Welsh) Division.
However, the 3 miles (4.8 km)-long section on the right, stretching from el Buqqar to the west of Bir Ifteis "was to be held at all costs", supported only by the Hants Battery RHA.
By the morning of 27 October this outpost line on the long ridge from el Buqqar to Hill 630, was held by the 1st County of London Yeomanry on the right, supported by the 21st Machine Gun Squadron, the 3rd County of London Yeomanry (Sharpshooters) on the left with the City of London Yeomanry (Rough Riders) in reserve north west of Kh.
Khasif.
One dismounted squadron of the regiment held Hill 630, three troops held Hill 720, and the post on el Buqqar was also garrisoned.

They would be reinforced during the day by the 3rd Light Horse Brigade from the Australian Mounted Division with the 12th Light Armoured Motor Battery, the 158th (North Wales) Brigade and 160th (Wales) Brigade from the 53rd (Welsh) Division, the 229th Brigade from the 74th (Yeomanry) Division, accompanied by the 96th Heavy Artillery group (less 4 batteries) and the British "A" Battery from the 117th Field Artillery Brigade
The 8th Mounted Brigade (Yeomanry Mounted Division), temporarily attached to the 53rd (Welsh) Division, relieved the 4th Light Horse Brigade at 17:25 on 26 October, when they took over the 14 miles (23 km)-long outpost line covering the railway construction to Karm.
This line ran from el Buqqar, to Hill 720 and on to Hill 630, stretching along the Wadi Hanafish and the Wadi esh Sheria to a point south of El Mendur. Most of the left section stretching north, was lightly held by standing patrols strongly supported in the rear, by an entrenched infantry brigade of the 53rd (Welsh) Division. However, the 3 miles (4.8 km)-long section on the right, stretching from el Buqqar to the west of Bir Ifteis "was to be held at all costs", supported only by the Hants Battery RHA. By the morning of 27 October this outpost line on the long ridge from el Buqqar to Hill 630, was held by the 1st County of London Yeomanry on the right, supported by the 21st Machine Gun Squadron, the 3rd County of London Yeomanry (Sharpshooters) on the left with the City of London Yeomanry (Rough Riders) in reserve north west of Kh. Khasif. One dismounted squadron of the regiment held Hill 630, three troops held Hill 720, and the post on el Buqqar was also garrisoned.
They would be reinforced during the day by the 3rd Light Horse Brigade from the Australian Mounted Division with the 12th Light Armoured Motor Battery, the 158th (North Wales) Brigade and 160th (Wales) Brigade from the 53rd (Welsh) Division, the 229th Brigade from the 74th (Yeomanry) Division, accompanied by the 96th Heavy Artillery group (less 4 batteries) and the British "A" Battery from the 117th Field Artillery Brigade
Battle of Buqqar Ridge