Australia's Defence Force is under strain from recruitment shortfalls and project delays. 

Defence shortages are raising concerns about the nation's security preparedness amid escalating strategic tensions.

In a recent estimates hearing, it was revealed that the Australian Defence Force (ADF) is operating with a deficit of over 4,300 troops, which the Chief of Defence Force, Angus Campbell, says is 6.9 percent below its authorised figure of 62,735. The Army, Navy, and Air Force are all experiencing shortages.

Defence Secretary Greg Moriarty highlighted ongoing efforts to trim billions from the defence budget through cuts or delays in projects, in response to criticisms about the military’s acquisition strategy and departmental performance.

The authorities say the ADF's ability to recruit and retain skilled personnel has also been hampered by a tight labour market.

A recent audit has exposed more than 37 years of cumulative delays across major defence projects, with the auditor-general's report pointing to significant schedule slippages and a reluctance from Defence chiefs to disclose detailed timelines, citing national security concerns. 

This lack of transparency has sparked criticism, suggesting that delays and project management issues, rather than national security, are the real reasons behind the secrecy.

Key projects affected include the $45 billion future frigates project, with concerns over cost overruns, integration challenges, and crewing. 

The report also highlighted the potential for a reduction in the number of frigates ordered, which could have profound implications for Australia's maritime capabilities.

Opposition voices, including Senator Andrew Hastie and Greens Senator David Shoebridge, have criticised the government and Defence leadership for what they see as a failure to adequately address these pressing issues. 

They argue that the delays and lack of transparency undermine national security and reflect poorly on Defence's management of critical projects.

In response to these challenges, Defence officials have outlined measures to improve project management and oversight, including monthly reporting on troubled projects and regular ministerial summits with contractors. 

However, critics remain sceptical about the effectiveness of these initiatives in addressing the root causes of the delays and personnel shortages.

The government is preparing to release its new Integrated Investment Program in the lead-up to the May budget.