An Australian Defence Force job advertisement for combat soldiers requires men to put in twice the minimum effort of women.

The $61,400 a year position for a frontline Army infantry soldier stated that males would need to commit four years as part of an initial period of service.

However, women would only be required to dedicate two years.

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An Australian Defence Force job advertisement for combat soldiers requires men to put in twice the minimum effort of women

The $61,400 a year position for a frontline Army infantry soldier stated that males would need be commit four years as part of an initial period of service. However, women would only be required to dedicate two years.

Iraq war veteran Bernard Gaynor, who is a member of the Australian Conservatives political party, said the Australian Defence Force was 'discriminating against men' for ideological purposes.

'This discrimination is occurring ironically at the direction of the Australian Human Rights Commission,' he told Daily Mail Australia on Tuesday.

Australian Defence Association executive director Neil James, who served in Iraq, was baffled as to why men would have to serve double the minimum period.

'It sounds unusual,' he said.

'It could be a mistake. I can't understand why they'd be different.'

Mr James supported women being allowed to be deployed in combat, when the rules were changed in 2013, and said it would take time for the proportion of frontline women in the Army to match that of the Navy and the Air Force.

'There's an historical hangover in increasing your percentages but if you start later, then obviously you'll lag behind,' he said.

The percentage of women in the Air Force stands at 20 per cent compared with 19 per cent in the Navy, which first allowed women to serve on ships in 1983.

Women's participation in the Army is at 12 per cent.

An infantry soldier based in the New South Wales Hunter Valley told an Army Facebook page women were allowed to pass less stringent physical tests than men.

'With speed and aggression being the key, a female or male soldier who cannot move shoot and communicate with the section becomes a liability and degrades our ability to kill the enemy,' he said.

The Australian Defence Force's job advertisement said the Army was searching for a combat soldier capable of being able to 'seek out and close with the enemy, to kill or capture him, to seize and hold ground, repel attack, by day or by night, regardless of season weather or terrain'.

Under the rules of the minimum period of service, men can leave at any time after doing four years of their initial minimum period of service, compared with two for women, provided they didn't owe any return of service obligation.

The had a salary package of $61,368 after completion of initial employment training.

Daily Mail Australia contacted the Australian Defence Force for comment on Monday afternoon but was yet to receive a response almost 24 hours later.