A 43-year-old policeman shot dead at the scene of a domestic argument had been commended five times for bravery.
Married father-of-two Pc Richard Gray, a trained firearms officer, was killed while attending a domestic dispute in Shrewsbury, Shropshire, on Sunday.
West Mercia chief constable Paul West said the Dundee-born officer had previously won recognition for his part in the arrests of two armed men.
The second man to die has been named as Peter Medlicott, 33, from Shrewsbury.
The pest control business owner is understood to have killed himself after shooting Pc Gray.
A .222 calibre rifle, commonly used in pest control, was recovered from the scene.
A post-mortem examination revealed both men died from single gunshot wounds to the head.
The force said a police armed response unit was called to attend a domestic incident at 0610 BST on Sunday in New Park Road.
Det Ch Insp Sheila Thornes said two unarmed officers attended the address as there was no early indication of an armed threat.
"However, when the officers arrived they were challenged by a man who held them at gunpoint," she said.
The officers radioed for help and an armed response vehicle was sent to the scene.
"Both authorised firearms officers were armed and as they went forward they were confronted by a man who shot Pc Ricky Gray.
"Approximately an hour later, the body of a man, now identified as Medlicott, was located by officers close to the scene," she said.
Det Ch Insp Sheila Thornes, who is heading the investigation, said the constable's weapon had not been fired.
She said police were not looking for anyone else in connection with the shooting.
Pc Gray, known as Ricky, married his long-term partner last year.
Pc Gray was shot while attending a domestic disturbance
Mr West told a press conference on Monday that the police officer's family was "understandably devastated".
"Pc Gray was an excellent officer. He was very popular with his colleagues, extremely well-liked and held in the highest regard," Mr West said.
"The fact he had been recommended for five commendations spoke volumes about his character."
Pc Gray received a divisional commendation for rescuing a man trying to jump from Shrewsbury's English Bridge into the River Severn, the conference was told.
He also received a chief constable's commendation for his part in the arrest of an "unstable" man with a firearm.
Pc Gray was additionally recognised for his part in arresting a violent man with a semi-automatic pistol who tried to escape police in a stop-check in April, 2006, in Shrewsbury.
The officer had previously worked for Cheshire Constabulary, serving in the Warrington area from 1997. He later joined the armed response unit before transferring to West Mercia Police in 2003.