 The Ammunition Technical Officer (ATO) and Ammunition Technician (AT or TECH AMMO) are involved with ammunition and explosives repair, storage, maintenance and disposal (EOD) and (IEDD)

An ATO is a Commissioned Officer and an AT is a soldier who are ammunition and explosives specialists with the principal role of providing ammunition safety and performance assurance to commanders.They provide technical advice, technical support and management functions relating to ammunition and explosives to commanders, staff and other organisations at all levels.Through detailed knowledge of ammunition design and explosives engineering, the responsibilities and an ATO and an AT encompass all aspects of construction, function, use, storage, distribution, transportation, inspection, repair, maintenance, disposal and accounting of ammunition and explosives, including the operation of related equipment and facilities.