Trumpet major

Trumpet major is an appointment in British Army cavalry regiments or the Royal Horse Artillery, held by a sergeant (or corporal of horse in the Household Cavalry) or a more senior non-commissioned officer or warrant officer. His job is to supervise the training and deployment of trumpeters who blow daily duty and ceremonial calls. Trumpet majors were first appointed to the establishment in 1811.

The trumpet was originally a signalling instrument, but it has become purely ceremonial since the invention of radio.