The recent recruitment change by Australia's Defence Force may be reflective of a bigger issue. 

From July New Zealanders who've lived in Australia for a year will be able to join the military. 

They'll also let residents from the UK, US, and Canada join up from January. 

Massey University security expert John Battersby told Mike Hosking that it can be a struggle for defence forces to get new recruits. 

He says for most people, working in the uniformed services isn't very appealing and it's a global problem. 

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