Home About Who we are Leaders Leaders Secretary of Defence Mr Greg Moriarty Mr Moriarty commenced as Secretary of Defence on 4 September 2017. Chief of the Defence Force General Angus J. Campbell, AO, DSC General Campbell was appointed Chief of the Defence Force on 7 July 2018. Associate Secretary Mr Matt Yannopoulos, PSM Mr Yannopoulos commenced as the Associate Secretary of Defence on 5 October 2021. Vice Chief of the Defence Force Vice Admiral David Johnston AC RAN Vice Admiral Johnston was appointed Vice Chief of the Defence Force on 7 July 2018. Chief of Navy Vice Admiral Mark Hammond Vice Admiral Hammond assumed command as Chief of Navy on 7 July 2022. Chief of Army Lieutenant General Simon Stuart, AO, DSC Lieutenant General Stuart assumed command of the Australian Army on 2 July 2022. Chief of Air Force Air Marshal Robert Chipman, AM, CSC Air Marshal Chipman assumed command of the Air Force on 1 July 2022. Chief Defence Scientist Professor Tanya Monro Professor Monro commenced as Australia's Chief Defence Scientist in March 2019. Chief Finance Officer Mr Steven Groves Mr Groves is the Chief Finance Officer (CFO) for Defence. Chief Information Officer Mr Justin Keefe Mr Keefe commenced as acting Chief Information Officer (CIO) in February 2023. Chief Nuclear-Powered Submarine Task Force Vice Admiral Jonathan Mead, AO RAN Vice Admiral Mead was selected as the Chief of the Nuclear Powered Submarine Task Force in September 2021. Chief of Defence Intelligence Lieutenant General Gavan Reynolds AO Lieutenant General Reynolds was appointed as Chief of Defence Intelligence on 1 July 2020. Chief of Joint Capabilities Lieutenant General John Frewen, DSC, AM Lieutenant General Frewen was appointed as Chief of Joint Capabilities in September 2021. Chief of Joint Operations Lieutenant General Greg Bilton, AO, CSC Lieutenant General Bilton was appointed as Chief of Joint Operations in June 2019. Deputy Secretary Capability Acquisition and Sustainment Mr Chris Deeble AO, CSC Mr Deeble was appointed Deputy Secretary CASG in August 2022. Deputy Secretary Defence People Ms Justine Greig Ms Greig was appointed to the role of Deputy Secretary Defence People in June 2018. Deputy Secretary National Naval Shipbuilding Mr Tony Dalton Mr Dalton is responsible for National Naval Shipbuilding in Defence. Deputy Secretary Security and Estate Ms Celia Perkins Ms Perkins was appointed as Deputy Secretary of Security and Estate in December 2021. Deputy Secretary Strategy, Policy and Industry Mr Hugh Jeffrey Mr Jeffrey was appointed as the Deputy Secretary of Strategy, Policy and Industry in August 2018.
