- Vacant Substantive roles Assistant Secretary - Enterprise BusinessEnterprise Business1300 333 362http://www.defence.gov.au/about Assistant Secretary Continuous NS&SContinuous NS&S1300 333 362http://www.defence.gov.au/about First Assistant Secretary PacificPacific1300 333 362http://www.defence.gov.au/about First Assistant Secretary - Group Business ManagementGroup Business Management1300 333 362http://www.defence.gov.au/about Last updated: 19 November 2021