The regiment fought against the forces of the Ottoman Empire, in Egypt, at Gallipoli, on the Sinai Peninsula, and in Palestine and Jordan.

During the inter-war years, the regiment was re-raised as a part-time unit based in the Darling Downs region of Queensland.

In action one man of each section, was nominated as a horse holder reducing the regiment's rifle strength by a quarter.

[1] When the Australian infantry units were dispatched to Gallipoli, it was thought the terrain was unsuitable for mounted troops, and the light horse regiments remained in Egypt.

However, heavy casualties amongst the Australian infantry resulted in the deployment of the 4th Light Horse Brigade as reinforcements in August 1915.

Faced with heavy Ottoman gun-fire, the regiment had to dismount to continue the attack, but were eventually forced to withdraw.

At this time, the regiment's numbers were bolstered by the 20th Reinforcements contingent which consisted of around thirty young Indigenous Australians, mostly from Queensland.

The regiment first charged the Ottoman defences on horseback using their sabres, then dismounted and cleared the town with their rifles and bayonets.

[10] Through this process, the 11th Light Horse was re-raised as a Citizens Forces unit within the 1st Military District in the Darling Downs region of Queensland, drawing lineage from several previously existing units through which it could trace its history back to the 14th Australian Light Horse Regiment (Queensland Mounted Infantry), which had been formed in 1903.

[12] Nevertheless, as part of a gradual demobilisation of the Australian Army the regiment was deemed surplus to requirements and on 3 July 1943 it was disbanded without having seen operational service during the war;[11] its personnel were re-allocated to the 2/10th Infantry Battalion as reinforcements.