Just after midnight on 4 August the 1st and 2nd Light Horse Brigades were attacked at Romani.
At 08:00, the regiment, acting as the brigade vanguard, advanced towards Dueidar; at the same time they could hear firing in the distance from Romani.
By 10:30 they were approaching the Turkish position on Mount Royston, and the regiment opened out to attack, with the 8th Squadron positioned on the left, the 1st in the centre, and the 10th on the right, with the Auckland Mounted Rifles following in support.
The 5th Light Horse Regiment, who were supposed to be to the left of the 8th Squadron, had not yet arrived.
The assault commenced at 15:00, supported by the Somerset Battery Royal Horse Artillery, and by 17:30 they had driven the Turks off Mount Royston.
The brigade captured an artillery battery and over 1,000 prisoners.
The regiment's casualties during the battle were one dead and fifteen wounded.
The next day at 03:30 they moved to Katia, which was believed to be occupied by a large Turkish force.
On arrival, the brigade galloped forward, attacking from the south.
When they got close the regiment dismounted and continued on foot.
Fighting all day, they waited in vain for the 3rd Light Horse Brigade to support the assault.
Still holding their ground at 20:00, they had to retire and return to Bir et Maler to water their horses.
Their casualties were two dead and fifteen wounded.

The Turkish force withdrew towards Katia, which by the time the regiment's reconnaissance patrol got there had been abandoned; the Turks were heading towards Oghratina.
Once the enemy were located, the regiment kept patrols in contact with them overnight and all during the next day while the Turks withdrew to Negilia.
By 8 August the enemy had reached Bir el Abd, where they established defences and were waiting for the New Zealanders.
Just after midnight on 4 August the 1st and 2nd Light Horse Brigades were attacked at Romani. At 08:00, the regiment, acting as the brigade vanguard, advanced towards Dueidar; at the same time they could hear firing in the distance from Romani. By 10:30 they were approaching the Turkish position on Mount Royston, and the regiment opened out to attack, with the 8th Squadron positioned on the left, the 1st in the centre, and the 10th on the right, with the Auckland Mounted Rifles following in support. The 5th Light Horse Regiment, who were supposed to be to the left of the 8th Squadron, had not yet arrived. The assault commenced at 15:00, supported by the Somerset Battery Royal Horse Artillery, and by 17:30 they had driven the Turks off Mount Royston. The brigade captured an artillery battery and over 1,000 prisoners. The regiment's casualties during the battle were one dead and fifteen wounded. The next day at 03:30 they moved to Katia, which was believed to be occupied by a large Turkish force. On arrival, the brigade galloped forward, attacking from the south. When they got close the regiment dismounted and continued on foot. Fighting all day, they waited in vain for the 3rd Light Horse Brigade to support the assault. Still holding their ground at 20:00, they had to retire and return to Bir et Maler to water their horses. Their casualties were two dead and fifteen wounded.
The Turkish force withdrew towards Katia, which by the time the regiment's reconnaissance patrol got there had been abandoned; the Turks were heading towards Oghratina. Once the enemy were located, the regiment kept patrols in contact with them overnight and all during the next day while the Turks withdrew to Negilia. By 8 August the enemy had reached Bir el Abd, where they established defences and were waiting for the New Zealanders.
Canterbury Mounted Rifles Regiment