Officer Cadet is a rank held by military cadets during their training to become commissioned officers. The term Officer Trainee is used interchangeably in some countries. Some countries refer to naval officer cadets as midshipmen, although in other countries this means something slightly different.
The ranks of Officer Cadet, Staff Cadet, or Midshipman are primarily found at these establishments. However, RAAF Officer trainees are often appointed at higher rank while undergoing their initial training course at OTS, if they have prior military experience, either as Officer Cadets prior to their initial officer course, or at Airman rank.
Officer Cadets are also appointed in the Australian Army Reserve where training is conducted on a part-time basis at various University Regiments around the country. A cadet sergeant wears two chevrons on the upper sleeve, a cadet lieutenant three, and a cadet captain from four to six chevrons.
For cadets in the rank of cadet sergeant and up, various combinations of stars, diamonds, rockers or arcs, and other devices are used on the sleeves to denote specific positions/jobs. The title of Cadet Captain is used for all cadets wearing four or more stripes/bars. The Brigade Commander, also called the First Captain chevrons with a gold star.