The Small Arms School Corps (SASC) was formed in 1929 from the amalgamation of the Small Arms School, Hythe, and the Machine Gun School, Netheravon. It is the soldiers of the SASC that became the instructors at these establishments. Prior to this, the instructors were on the roll of the Small Arms School, but remained on the establishment of their parent Regiments.
The Small Arms School had been established in 1919, before which it had been the School of Musketry. The first Vickers machine gun course was taught by the School at Aldershot between 25 October and 15 November 1913.
For those interested in the history of the Small Arms School Corps, Richard Fisher has authored a comprehensive study, published by Helion and Company in 2019.