Lieutenant-Colonel Hirschfeld was born on the 5th of August, 1941 in Goldenville, Nova Scotia. In 1962, he joined the Canadian Army and graduated from the Armoured Corps School in Camp Borden, Ontario, as a Second-Lieutenant in 1963.
During his thirty-four year military career, Hirschfeld served with both the Royal Canadian Dragoons and the 8th Canadian Hussars. His duties included Troop Leader, Battle Captain, Squadron Commander, and Regimental Second-in-Command. He was also a member of Canada's Olympic National Biathlon Ski Team.
He also served extensively at the Combat Training Centre at CFB Gagetown, being one of the first officers to serve at the newly formed Combat Arms School.
Hirschfeld took part in a year-long Australian Army Command and Staff Collage Course in Queenscliff, Australia in 1981. While Outback, Hirschfeld made many new friends and enjoyed his time. The Slouch Hat on display was given to him by his Australian friends.
Notably, Hirschfeld served with NATO's Central Army Group HQ in Germany as the Senior Canadian Liaison Officer from 1987-1990. He retired from the Army in June 1996 and currently lives with his wife in Oromocto, New Brunswick