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What capabilities are being tested under AUKUS Pillar II?

23rd February 2026 - 15:45 GMT | by Eleanor Harvey in Manchester, UK

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C2 Robotics’ Speartooth large uncrewed underwater vehicle had already undergone live fire tests overseen by the Australian Army last year. (Photo: Gordon Arthur)

Collaboration on AUKUS Pillar II extends beyond the core trilateral agreement, presenting global opportunities for companies with advanced technologies.

Autonomous and uncrewed systems are at the heart of Pillar II of the tripartite agreement between Australia, the UK and the US – AUKUS – with another round of testing under the Maritime Big Play exercise recently being completed in Australia marking another milestone in the project.

The goal of the Maritime Big Play series of exercises is to allow the three pillar countries, alongside potential external partners including Canada, Japan, South Korea and New Zealand, to test the advanced technologies of multiple companies that aim to tackle threats both above and beneath the water.

In the latest tests, around 30 next-generation

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Eleanor Harvey

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Eleanor Harvey


Eleanor Harvey is content editor at Shephard Group, responsible for overseeing the quality and scope …

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