Its rank structure is based upon that of St John Ambulance in the United Kingdom, while also taking inspiration from the Australian Army.
St John Ambulance South Australia no longer wears rank markings on green operational uniforms.
Doctors, Paramedics, Registered and Enrolled Nurses have special markings on the epaulette to indicate their Health Care Professional status.
NB: Enrolled Nurse level is not recognised with St John Ambulance South Australia credentialing systems.
Gorget patches are worn on the collar of the shirt or lapel of the jacket of State and National Officers.