The Rebels motorbike gang are accused of disrupting a second Anzac Day dawn service by revving their motorbikes.

The gang are already under the pump, after turning up late to dawn service in Waiouru, then roaring off during the Last Post.

Now a Taihape resident said; "I presume it was the same group of the rebels that rode through the Taihape dawn parade revving there bikes and being clowns."

A second local source said the dawn service at the Taihape War Memorial was disrupted by motorcycles.

Taihape and Waiouru are about a 20 minute drive apart.

The Rebels' actions at Waiouru were labelled as "disgusting" by a grandmother.

Merna Brotherston was at Saturday's dawn service at Waiouru with her daughter and two grandsons when member of the Rebels Motorcycle Gang arrived late.

"A lot of people were quite disgusted, but they couldn't do anything about it because the service was on."

Their anger was compounded when the gang left in the middle of the Last Post, drowning the bugle notes out as they roared off down the road.

"I thought it was disgusting. What a complete lack of respect," Brotherston said.

The small central North Island township of Waiouru is home to huge military training area.

The army base had been a perfect place to witness the dawn parade, she said.

Video shot at the service confirmed her account of events, with the Rebels riding off just metres away from a military guard.

Brotherston's grandson Charlie said it was clear the revving engines were not meant as any sort of tribute.

"I just thought they were being dick-heads."

Andi Brotherston described the incident as "perhaps the most disrespectful moment in the history of Anzac Day," on Twitter.

"People here are so angry," she said on Saturday.

There were also gang members at the Auckland dawn service, however they were well behaved.

The Rebels' motto is "Respect Few Fear None."

 - Stuff