A police officer on duty in Exmouth was knocked unconscious after he was kicked and headbutted to the ground while dealing with a two-man brawl off Salterton Road.
And two other police officers at the scene had blood and saliva spat at them, landing on their faces and hands.
A 37-year-old man, of no fixed abode, was arrested on suspicion of two counts of assault causing actual bodily harm. He was released on police bail until March 25, pending further enquiries.
Devon and Cornwall Police said an officer was called to a property in Drakes Avenue, off Salterton Road, at around 3.30pm on Tuesday, March 2, after a report a man had spat at another male.
Police said a 33-year-old officer was bitten on the hand, kicked, headbutted and knocked to the ground, where he lost consciousness.
A Devon and Cornwall Police spokeswoman said: “Police were called to an address on Drakes Avenue, Exmouth, at around 3.30pm on Tuesday 2 March with a report that a man had spat at another man.
“When police arrived, a man bit a 33-year-old male police officer on the hand, kicked him and headbutted him, causing a cut to his nose and knocking him to the ground resulting in him hitting his head and losing consciousness.
“The man then spat blood and spittle at two other male police officers, which landed on their faces and hands.”