 The OP SUP may be required to operate in combat, Combat Support and Combat Service Support roles.An OP SUP is to undertake the demand, receipt, storage, security, maintenance, inspection, internal issue, accounting for and disposal of all types of equipment and stores for, or held by the unit.OP SUP may be recruited or selected for the additional AMMO SUP course and specialise in ammo supply (see AT/ATO trade details below).