A man posed as a policeman to stop travellers beating him up and mowing him down as he bravely stopped 30 caravans pulling on to playing fields.
The hero resident, a dog walker who would only be named as Stevie, said they threatened to "smash his face in" and run him down during the five-hour stand-off.
But he thwarted a group of five who "piled on top of me and knocked me down" by claiming he was a police officer.
Police were called as tensions rose during the dispute, at the entrance to the King George V fields in Sutton Oak Road, Sutton Coldfield, West Midlands.
The 27-year-old raced into action when he spotted the caravans approach as he walked his dog at around 8pm last Friday.
Thirty travellers were trying to pull on to the playing fields
When the travellers finally left, Stevie said some apologised and shook his hand
The travellers finally left at about 1am on Saturday after they admitted defeat, the Birmingham Mail reports.
Stevie told the Sutton Coldfield Observer: "I heard horns beeping and saw caravan after caravan.
"I sprinted to the other side of the field, got to one of the caravans and pulled the brake lever.
"At that point, four or five of them piled on top of me and knocked me down.
"I screamed that I was a police officer and said: 'If you touch me you're going to be arrested for assaulting a policeman.'
Police were called as tensions rose during the dispute, at the entrance to the King George V fields in Sutton Oak Road, Sutton Coldfield
"They all backed off.
"I got up and dialled 999.
"I managed to get up to the gate and stood in front of a van that was just about to come onto the field.
"Now there was a big crowd, there were 20 to 30 travellers surrounding me.
"They could see it was all kicking off and were asking for my badge."
Stevie said he was able to shut the entrance gate when police arrived and other residents turned up to support him
Stevie said he was able to shut the entrance gate when police arrived and other residents turned up to support him.
He said: "I told police I was not moving until the vehicles went.
"They made various threats against me – including running me over.
"They came over and said: 'This is what we call a tug of war, may the best man win.'
"As soon as the gate touched me, I started screaming in pain – there was nothing wrong with me at all.
Some of the travellers asked to see Stevie's badge
"The police ordered them to stop as they thought I was being hurt."
When the travellers finally left, Stevie said some apologised and shook his hand.
He said: "If people aren't willing to get their hands dirty and do something, you can't expect the police and council to help you.
"Traveller groups have a better sense of community than anybody else.
"It's not fighting fire with fire – it's just fighting organisation and community with organisation and community."
West Midlands Police has been contacted for comment by The Mirror.