[2][5] During the 1920s the Australian Light Horse converted from their pre-war mounted rifles role to that of cavalry modelled along British Army lines.

[6] However, by the end of the 1920s the stringent financial situation across the Army, and the suspension of the compulsory training scheme,[7] led to the amalgamation of a number of light horse units.

[1] In October 1936, the units were unlinked and the 18th was raised as the 18th Light Horse (Machine Gun) Regiment (Adelaide Lancers).

[1] As a machine gun regiment they provided fire support to the 2nd Cavalry Division, based in Victoria and South Australia.

They were equipped with Vickers Medium Machine Guns which were transported via civilian trucks which were hired from members of the unit given the very limited motorisation which the Army had undergone by this time.