Australia appoints new defence force chief and first female army chief
Consensus Summary
Australia’s government announced two major appointments in the Australian Defence Force (ADF) on April 13, 2026, marking historic and strategic shifts. Vice Admiral Mark Hammond, a 40-year navy veteran and former submarine commander, was named the new Chief of the Defence Force, replacing Admiral David Johnston, who will retire in July. Hammond emphasized the navy’s readiness, with 10 surface combatants—eight currently at sea—equipped with advanced systems, and pledged to improve recruitment amid record-low retention. Meanwhile, Lieutenant General Susan Coyle became the first woman to lead the Australian Army, taking over from Lieutenant General Simon Stuart. Defence Minister Richard Marles called her appointment a 'deeply historic moment,' highlighting its significance for women in the military. Both Hammond and Coyle have extensive experience, with deployments across the Indo-Pacific and leadership roles in joint operations. The appointments come amid challenges, including the arrest of decorated soldier Ben Roberts-Smith on war crimes charges and ongoing pressures to modernize Australia’s defence capabilities, particularly through the AUKUS nuclear submarine program.
✓ Verified by 2+ sources
Key details reported by multiple sources:
- Vice Admiral Mark Hammond was appointed as the new Chief of the Australian Defence Force, replacing Admiral David Johnston, who will retire in July 2026.
- Lieutenant General Susan Coyle was appointed as the first female Chief of Army, replacing Lieutenant General Simon Stuart, who will also retire in July 2026.
- Defence Minister Richard Marles described Susan Coyle as a 'standout candidate' and called her appointment a 'deeply historic moment' for women in the ADF.
- Vice Admiral Mark Hammond has spent 40 years in the navy, including as a submarine commander, and was previously the Chief of Navy.
- Rear Admiral Matthew Buckley will replace Vice Admiral Hammond as the Chief of Navy.
- Lieutenant General Susan Coyle has served in the ADF for over 30 years, including deployments to Timor-Leste, Solomon Islands, Afghanistan, and the Middle East.
- Vice Admiral Hammond stated that the navy is 'as ready as it ever has been,' with 10 surface combatants, eight of which are currently at sea, equipped with advanced radars and missile systems.
- Prime Minister Anthony Albanese thanked Admiral David Johnston and Lieutenant General Simon Stuart for their service as they prepare to leave the ADF.
- Vice Admiral Hammond called his appointment the 'most humbling moment in my career' and emphasized the need to improve recruitment and retention in the ADF.
Points of Difference
Details reported by only one source:
- Vice Admiral Hammond previously defended Australia's nuclear submarine push under AUKUS, calling critics 'external agendas' and urging confidence in the project.
- Vice Admiral Hammond stated that disruptions to the rules-based order pose 'existential threats' to Australia and emphasized the need to optimize the navy's capabilities.
- Admiral Johnston made a similar argument to Hammond about Australia's naval capabilities in response to potential US blockade requests in the Strait of Hormuz.
- Vice Admiral Hammond did not speak about AUKUS during the press conference but has previously been a vocal defender of the program.
- Vice Admiral Hammond joined the navy in 1986 as an electronics technician before becoming a naval officer in 1988.
- Lieutenant General Susan Coyle joined the army reserve in 1987 and graduated as an officer from the Australian Defence Force Academy in 1992.
- Coyle holds postgraduate master’s degrees and is a distinguished graduate of the US Army War College.
- The appointments follow the arrest of Ben Roberts-Smith, Australia’s most decorated soldier, who was charged with multiple war crimes-related offences.
- Defence Minister Richard Marles is expected to announce Australia’s two-yearly national defence strategy update before the National Press Club on Wednesday.
- The ADF has faced pressure to refocus on threats on Australia’s northern border, including through the mass sell-off of ageing defence assets.
Contradictions
Conflicting information between sources:
- The ABC and News.com.au mention Vice Admiral Hammond's response to potential US blockade requests in the Strait of Hormuz, but only News.com.au explicitly states that 'there’s been no such request as yet' from the US government.
- The ABC and Guardian mention Vice Admiral Hammond's 40 years in the navy, but only the Guardian specifies he joined in 1986 as an electronics technician before becoming an officer in 1988.
Source Articles
Albanese names new defence force chief
Vice Admiral Mark Hammond, who has spent 40 years in the navy, will replace current defence force chief David Johnston when he retires in July.
Susan Coyle to be first woman to lead Australian army in ‘deeply historic moment’
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