During early 1918, the regiment played a defensive role during the German spring offensive and then supported French operations during the Second Battle of the Marne.

[1] The regiment's constituent units had previously served in the Gallipoli campaign and Egypt;[2][3] while the majority of the Australian and New Zealand mounted troops remained in the Middle East to take part in the Sinai and Palestine campaign,[4] a small number were deployed to the Western Front to support the Australian and New Zealand infantry divisions that were deployed there in mid-1916.

In the early part of its involvement on the Western Front it was mainly used in the rear areas, while being held in readiness to respond if there was a breakthrough to exploit, or a rapid penetration of the line by enemy forces to counter.

[1] During April and May 1918, amidst the German spring offensive, the regiment was heavily involved due to the more mobile nature of operations during this phase.

In August, the Allies launched their Hundred Days Offensive, during which the regiment undertook reconnaissance and acted as a screening force as the infantrymen advanced as part of efforts to breach the Hindenburg Line.