They have been fighting in the Middle East for several years, and were involved in the first confirmed ground battle between ISIS and western forces in January 2015.
Soldiers visiting front-line positions with Kurdish Peshmerga forces came under heavy mortar and machine gun fire.
.The Canadians used sniper fire to 'neutralise' the ISIS threat without taking any casualties.Brigadier General Michael Rouleau said the troops, whose job it is to train the Iraqi military, fired back only in self-defence.
He added: 'My troops had completed a planning session with senior Iraqi leaders several kilometres behind the front lines.'
Special forces fighting in Iraq and Syria regularly make use of sniper rifles, as they are considered a more accurate way of targeting insurgents than airstrikes.
Last month, a British SAS sniper is said to have shot dead an ISIS jihadi from 7,920 feet (1.50 miles) away using the world's most powerful rifle.
The kill was unconfirmed by the military so is not included in the league table.
It took three whole seconds for the bullet to reach its target - the throat of an Islamic State terrorist in the Iraqi city of Mosul.
The British marksman was using a CheyTac M200 Intervention gun which is produced in South Carolina and retails at $13,800 (£10,500) and can vaporise a person's organs from 8,200 feet.
As the terrorist was leaving a burned-out building two weeks ago, the SAS gunman is said to have pulled the trigger, registering one of the most difficult kills in the regiment's history.
.
