About
General Sir Peter John Cosgrove is a retired senior Australian Army officer. He is best known for serving as the 26th Governor-General of Australia from 2014 to 2019. Prior to his role as Governor-General, Cosgrove had a distinguished military career, rising to the rank of General and serving in various leadership positions. He is highly regarded for his service to the nation.
Career Timeline
Leads INTERFET in East Timor
Cosgrove commanded the international peacekeeping force in East Timor, earning him national recognition. This significantly boosted his public profile.
Named Australian of the Year
Cosgrove's service in East Timor led to this honor, further solidifying his reputation as a national hero.
Promoted to Chief of Army
Cosgrove reached the highest rank in the Australian Army, demonstrating his leadership and expertise.
Appointed Chief of Defence Force
Cosgrove's career culminated in his appointment as head of the Australian Defence Force.
Becomes Governor-General of Australia
Cosgrove transitioned from military leadership to ceremonial head of state, maintaining a high public profile.
Retires as Governor-General
Cosgrove retires from public office after a distinguished career, retaining high regard.
Remains Respected Public Figure
Cosgrove continues to be a respected figure in Australian society, although he is no longer in active service.
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Last updated: February 24, 2026