A former soldier has labelled a plan to alter an Australian Army's motto to be more tolerant of all religions as 'foolish appeasement' to Islam.

Bernard Gaynor, who served in the military and is contesting next year's election as a Senate candidate for the right-wing Australian Liberty Alliance, slammed the potential changes on Saturday morning.

Army chaplains could have the slogan, 'in this sign conquer' removed from hat bridges as part of a push for greater diversity.

A former soldier has labelled a plan to alter an Australian Army's motto to be more tolerant of all religions as 'foolish appeasement' to Islam (stock image)

However, it has been reported by The Daily Telegraph the potential change would be a direct attempt to not offend Muslims.

The motto is linked with Roman figure Emperor Constantine and the crusades. It is believed Constantine had a vision where he saw the slogan written in the sky prior to the battle of Milviian Bridge in 312AD.

Professor Tom Frane said it would be worth taking another look at the motto, which has been the subject of confusion on previous occasions.

'It seems like a crusading motto — triumphal,' Prof Frane told the newspaper.

Bernard Gaynor, who served in the military and is contesting next year's election as a Senate candidate for the right-wing Australian Liberty Alliance, slammed a plan to change the slogan on army chaplains hats

Army chaplains could have the slogan, 'in this sign conquer' removed from hat bridges as part of a push for greater diversity

Mr Gaynor, a father-of-seven, responded to the newspaper's claims on social media.

'The Australian Army is changing a hat badge to soothe Islamic sensibilities. That's foolish appeasement,' he wrote.

'It shows how weak we are and explains why we would let some one who supports Hizb ut Tahrir advise the military on its recruitment strategies.'

'The Australian Army is changing a hat badge to soothe Islamic sensibilities. That's foolish appeasement,' Bernard Gaynor wrote

The second part of Mr Gaynor's comment is in relation to army imam Sheikh Mohamadu Nawas Saleem.

A defence spokeswoman denied the motto was being reviewed to appease any specific religion.

'The motto of the Australian Army Chaplains is being changed to better reflect the diversity of religion throughout the Australian Army,' the spokeswoman said, according to The Daily Telegraph.

A defence spokeswoman denied the motto was being reviewed to appease any specific religion (stock image)

'The new wording on the Australian Army Chaplaincy badge is under consideration and no decision has been made at this time.'

The spokeswoman also reportedly said there are 102 Muslim permanent members of the defence force, and 40 reserve members.