The most powerful militaries in the world, updated July, 2022:
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19. Australia
As an overview - Australia has recently seen hostilities from China and therefore joined QUAD (a group of USA, India, Japan and Australia), bringing like-minded countries together, adding further security. Australia's military is also a capable fighting force and will be expanding it's capabilities in the future.
Current Manpower - Population - 25,466,459 - Active Military Personnel - 60,000 - Reserve Personnel - 20,000 - Fit for Service - 8,770,648 - Reaching Military Age Annually - 280,661