A man armed with a metal pole assaulted a police officer in a street fracas.
Daniel Moore was involved in an incident at his home in Grainger Avenue, Bootle on Saturday, December 14 last year.
Merseyside Police said they were called out to reports of a "domestic disturbance", which spilled out into the road, at around 11pm.
Photos showed two police cars and a force van in attendance at the scene, where officers remained until the early hours of the following Sunday morning.
Moore was arrested and initially charged with assaulting a police officer and criminal damage to a police car.
The 35-year-old was also charged with two assaults, allegedly committed in Whiston, two months previously.
The criminal damage allegation was later dropped by the Crown Prosecution Service.
Moore appeared at Liverpool Crown Court via video link from the Scott Clinic, a medium secure psychiatric unit in Rainhill.
Charles Lander, defending, confirmed doctors had deemed his client fit to enter pleas to the four charges against him.
Moore admitted assault causing actual bodily harm against a man called Paul Morris, in Whiston, on October 11.
He pleaded not guilty to the assault by beating of another man, Andrew Sutton, also in Whiston, on the same date.
Moore admitted assaulting an emergency worker and possessing an offensive weapon in Bootle on December 14.
Natalia Cornwall, prosecuting, said the pleas were accepted on the basis Moore would be sentenced on the full facts of the prosecution case relating to the assault causing actual bodily harm charge.
Judge Denis Watson, QC, said the outstanding assault by beating charge would be ordered to lie on the file and vacated provisional trial dates set for this month.
Mr Lander requested an up to date psychiatric report from a consultant forensic psychiatrist.
He said the doctor would be asked to make recommendations about what type of sentence Moore should receive.
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Judge Watson adjourned sentencing until July 7.
He remanded Moore in custody until that date.
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