Canning MP Andrew Hastie is defying "orders" from the Australian Defence Force (ADF) to remove photos of himself in uniform from federal election campaign material.

Mr Hastie, who was an SAS officer before being elected to parliament last year, retired from the military in August prior to taking office.

Canning MP Andrew Hastie was sacked from the Army Reserve after he refused to remove photos of himself in uniform from election campaign material. Credit:Nathan Hondros

He received the ADF orders after Labor's candidate for the seat of Brisbane, Pat O'Neill, was instructed by the ADF to take down photographs of himself in uniform used in campaign advertisements on a billboard.

It is understood Mr Hastie was also threatened with disciplinary action if he failed to comply with the letter.