3rd (Special Service) battalion, The Royal Canadian Regiment of Infantry occupied Wellington Barracks in London Ont.

During a reorganisation of the Canadian Army in the early 1950s, 3 RCR ceased being on the regular force order of battle.

It served in Baden, Germany, until 1984, when it was replaced by 2nd Battalion Princess Patricia's Canadian Light Infantry.

[1] The attack was repulsed, but the engagement cost the regiment heavy casualties – 26 killed, 27 wounded and seven taken prisoner.

It consisted of the following: 3 RCR remained in Germany until 1993, when 4 Canadian Mechanized Brigade Group was stood down following the end of the Cold War.

It stood up as the core of Task Force 3–08 Battle Group in January 2008 and assumed duties in Kandahar in September of that year.

1st Platoon, M Company was featured in the Discovery Channel documentary series Combat School while training for their first operational deployment to Afghanistan.

3 RCR BG served in Kabul until early 2004, when it was replaced by a battle group of the Royal 22e Régiment.

Having completed extensive training in Fort Irwin, California, and CFB Petawawa, O Company was ready to fight in counter-insurgency-style combat.

[4] Over the course of the deployment, one platoon, who were located along 'Route Nightmare', suffered a high number of casualties from IED and ambush attacks.

Shortly thereafter, N (Airmobile) Company, deployed to Yuma, Arizona, United States, to participate in the US Marine Corps' Weapons and Tactics Instructors course.

In late October and early November 2018, a contingent from the battalion, alongside the Royal Canadian Artillery Band, which provided musical support, mounted the Queen's Guard.

The event was one of the rare occasions that a Canadian Forces unit wore an authorized Atholl-grey winter greatcoat.

(Description of the badge of The RCR as presented in Regiments and Corps of the Canadian Army, published by the Army Historical Section, 1964) The letters VRI on the cap badge of the RCR stand for Victoria Regina Imperatrix, which is Latin for "Victoria, Queen and Empress".

When a royal or imperial cypher forms part of the badge of a regiment it is normal for it to change with each succeeding sovereign.