Men are losing out on jobs in the Australian Defence Force as it looks to boost the number of women in its ranks.

Staff have been told to recruit only women, including in frontline combat roles, under threat of being reassigned if they ignore the directive, News Corp Australia reports.

Of 50 Army jobs posted this week, only 15 are available to men.

The navy and air force are facing similar quotas. Only one of 18 navy jobs listed for the next six months is open to men and the air force has none at all.

Bernie Gaynor, a former Army officer and Australian Conservatives party member, says the ADF's "politically correct policies have gone beyond bonkers.

"It is now openly discriminating against males for its combat roles in the Army," he told News Corp.