Gil (Evan) Gilmore was born in October 1917. He served in the Royal Canadian Air Force during World War II. After the war he held various jobs until he joined the Ontario Provincial Police in January 1950. Gil was posted at Noelville, Sudbury, White River, Elliot Lake, Levack, Foleyet, Little Current and Spanish during his career. At Spanish he became a Corporal and held the position of Detachment Commander.

Early in his career, as a Constable, Gil had been wounded during a liquor seizure, having been shot in the leg by the suspected bootlegger.

On November 5, 1973, Constable Gilmore was notified about a stolen car being driven by three young men. Attempts had been made to stop the car, to no avail. Finally, after losing control and ending up in the ditch, the three men were caught and, after a scuffle with the officers, handcuffed. The exertion of dealing with the young men left Constable Gilmore feeling unwell and ultimately led to his death due to a heart seizure following severe physical exertion.

Gil Gilmore was survived by his wife.