Australia–Indonesia Military Partnership

The Australia–Indonesia military relationship has historically been complex and sometimes strained, yet today it stands as a critical defense partnership in Southeast Asia. With shared maritime security concerns, counterterrorism cooperation, and regional stability goals, the two nations have strengthened military ties through a Defence Cooperation Agreement (DCA) and increased joint training. As Indonesia emerges as a rising military power and Australia expands its Indo-Pacific strategy, this partnership remains vital for ensuring regional security in an era of great-power competition and evolving threats.

From left, Indonesian Army Lieutenant Colonel Deden Kurniawan, commander of the exercise delegation; U.S. Marine Corps Col. Brendan Sullivan, commanding officer of Marine Rotational Force – Darwin 23; Royal Australian Navy Captain Mitchell Livingstone, commander of Headquarters Northern Command; and Wayne Snell, director of concepts and capabilities with the Australian Civil-Military Centre, pose for a photo during the closing ceremony of Exercise Crocodile Response 23 at Mount Bundey Training Area, Northern Territory, Australia, May 24, 2023. Crocodile Response is a trilateral engagement between the Australian Defence Force, Indonesian National Armed Forces, and MRF-D that extends shared interoperability throughout the Indo-Pacific, increasing efficiencies in responding to crisis and contingency. (U.S. Marine Corps photo by Cpl. Adeola Adetimehin)From left, Indonesian Army Lieutenant Colonel Deden Kurniawan, commander of the exercise delegation; U.S. Marine Corps Col. Brendan Sullivan, commanding officer of Marine Rotational Force – Darwin 23; Royal Australian Navy Captain Mitchell Livingstone, commander of Headquarters Northern Command; and Wayne Snell, director of concepts and capabilities with the Australian Civil-Military Centre, pose for a photo during the closing ceremony of Exercise Crocodile Response 23 at Mount Bundey Training Area, Northern Territory, Australia, May 24, 2023. Crocodile Response is a trilateral engagement between the Australian Defence Force, Indonesian National Armed Forces, and MRF-D that extends shared interoperability throughout the Indo-Pacific, increasing efficiencies in responding to crisis and contingency. (U.S. Marine Corps photo by Cpl. Adeola Adetimehin)

History

  • Cold War & Tensions (1945–1990s): Relations were uneasy during the Cold War, particularly due to Australia’s alignment with the West and Indonesia’s internal military conflicts.
  • East Timor Crisis & Military Freeze (1999–2002): Australia’s military intervention in East Timor strained relations, leading to a temporary suspension of defense ties.
  • Post-2000s Reconciliation & Growing Cooperation: Both nations repaired military relations, culminating in counterterrorism coordination and maritime security agreements.

Key Characteristics

  • Defence Cooperation Agreement (DCA) (2012, Updated 2021): Strengthens joint military training, intelligence-sharing, and naval security cooperation. Enhances interoperability between the Australian Defence Force (ADF) and the Indonesian National Armed Forces (TNI).
  • Counterterrorism & Maritime Security: Joint Special Forces Training: Focuses on counterterrorism operations, hostage rescue, and urban warfare. Maritime Patrol Coordination: The Royal Australian Navy (RAN) and Indonesian Navy (TNI-AL) conduct joint patrols to combat piracy, smuggling, and illegal fishing.
  • Military Exercises & Regional Security Cooperation: Exercise Garuda Shield: Australia participates in Indonesia’s largest multinational military drill, improving regional defense cooperation. Indo-Pacific Stability Efforts: Both nations collaborate under ASEAN-led defense forums to counter China’s expanding influence in the South China Sea.

Strategic Importance

  • Ensuring Stability in Southeast Asia: The partnership reinforces regional security against transnational threats like terrorism, piracy, and cyber warfare.
  • Strengthening ASEAN-Australia Defense Ties: Australia’s growing military relationship with Indonesia enhances its engagement with ASEAN security initiatives.
  • Maritime Security & South China Sea Deterrence: Joint naval patrols and intelligence-sharing support freedom of navigation and regional deterrence against coercive actions.

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