Seven police officers were injured and two cars were damaged when a "serious disturbance" broke out in the early hours of Saturday morning.
Violence erupted at about 0400 BST on Kiln Way in Wellingborough, Northants, following reports a police car was being damaged by a gang.
Officers intervened and reinforcements had to be drafted in from across the county to deal with the violence.
The officers suffered minor injuries and did not require hospital treatment.
Six people have been arrested.
A police spokesman said the incident started when officers in Wellingborough were alerted to a gang damaging their police car.
"Officers from throughout the county were drafted into the area to assist in regaining control after the disturbance," he said.
Police were continuing their inquiries into the incident on Saturday.