The Defence Intelligence Officers’ Course (DIOC) is a comprehensive course which runs for 3 months.  It is an upgrading course for the Basic Intelligence Officers’ Course (BIOC) qualified staff.  It prepares officers for early mid-career challenges in the intelligence and security field.  Those to attend should be Grade Levels 9 & 10 officers.  This is without prejudice to the exigency of nominating officers on higher grade levels.  For military personnel, the course is open to officers of the rank of Capt/Maj and equivalent.