On 9 January 2015, the regiment was recognized with the Canadian Forces' Unit Commendation for outstanding contributions to the war in Afghanistan.

Significantly, a St. Andrew's Cross has been added to the design (this is not a representation of the Roman Numeral ten as is often erroneously reported).

Details of the 103rd Regiment "Calgary Rifles" were called out on active service on 6 August 1914 for local protection duties.

There it provided reinforcements for the Canadian Corps in the field until 6 July 1916, when its personnel were absorbed by the 9th Reserve Battalion, CEF.

There it provided reinforcements for the Canadian Corps in the field until 18 July 1916, when its personnel were absorbed by the 9th Reserve Battalion, CEF.

Sergeants Lyster and Pittaway[8] were decorated with a Mention in Despatches for their part in shooting down two German aircraft during the raid, and one officer of the regiment was killed while ashore with a brigade headquarters.

Sergeant Clarence "Ken" Crockett, DCM, of the 1st Battalion, Calgary Highlanders, was nominated for the Victoria Cross for actions in September 1944 and instead received the Distinguished Conduct Medal.

Militiamen and even army cadets were routinely flown to NATO exercises in Germany, Norway and Alaska to participate in realistic training, as the perceived threat of Warsaw Pact military aggression was felt to be high.

To qualify for a battle honour, CF units were required to contribute an aggregate of more than 20% of authorized strength to the various task forces which served in Afghanistan between 2002 and 2014.

[11][12] In the mid-1920s, the regiment formed an official alliance with The Argyll and Sutherland Highlanders (Princess Louise's) of the British Army.

[14] Honorary distinction: Oak-leaf shoulder badge for the actions of the 10th "Overseas" Battalion, CEF, at the Battle of Kitcheners' Wood on 22/23 April 1915.

The Calgary Highlanders adopted many dress distinctions of the allied regiment in Scotland in the 1920s and continue to cherish those distinctions into the 21st century, including the red and white diced Glengarry worn by all ranks (except pipers), the badger head sporran worn by officers, warrant officers, and senior NCOs, the six-point horsehair sporran worn by junior NCOs (except pipers), and the striped necktie of the 2nd Battalion, The Argyll and Sutherland Highlanders, also worn by officers, warrant officers, senior NCOs, pipers and drummers of The Calgary Highlanders.

The regiment was permitted to perpetuate the history of the 10th Battalion, CEF, and inherited that units battle honours (granted in 1929) as well as inheriting the memory of two Victoria Cross holders, Acting Sergeant Arthur George Knight and Private Harry W. Brown, both of whom were awarded the VC posthumously in the last year and a half of the Great War.

In recognition of this gallant effort and the persistence of the Winnipeg Light Infantry, the Calgary Highlanders and the Canadian Scottish, a special 'honorary distinction' was granted by Order in Council No.

[16] The Calgary Highlanders pioneered battle drill for the Canadian Army, which was a realistic system of training infantry for the hardships of modern war.

In Operation Spring, the Calgary Highlanders were part of the Battle of Verrières Ridge, along with the Black Watch, in which the regiment took heavy casualties.

The unit saw extensive action in Normandy, marched through Dieppe with the 2nd Division in September 1944 as liberators, then moved on to the fighting for the Channel Ports.

The regiment saw extensive fighting in the Netherlands in October 1944, opening the way to South Beveland, and then west to the Walcheren Island Causeway where the brigade fought an extended battle beginning on Hallowe'en night.

From November to February 1945 the regiment wintered in the Nijmegen Salient, then was back in action in the Rhineland fighting, clearing the last approaches to the River Rhine itself.

[17] Also originally part of the centennial events was the announcement of a Calgary Soldiers' Memorial, which was later dedicated on the anniversary of the battle of Vimy Ridge in 2011.

"[19] As part of Canada's role in the Afghanistan War, the regiment deployed over 100 soldiers to the theatre as individual augmentees and on other assignments with the Regular Force, to a total of 126 separate tours of duty.

[12]In addition to the cap badge and oak leaf shoulder titles mentioned above, the regiment wears several other notable distinctions of dress.

Pipers in the 2nd Battalion (Calgary) continued to wear Royal Stewart tartan until 1947.Mess dress for officers and senior NCMs is based closely on that worn by the Argylls; Honorary Colonel Mannix approved a new distinctive pattern officers' mess jacket in the 1980s, which featured buttons on a turn-back cuff, which differed from the Argylls pattern.

Other than regimental headdress (when not wearing the CADPAT field cap or helmet), the only distinction a Calgary Highlander has in combat dress are the CALG HIGHRS titles on his slip-ons.

The parade day closest to October 31 commemorates the role of The Calgary Highlanders in the Battle of Walcheren Causeway.

Regimental plaques can be found at various sites, including Mewata Armouries, Hill 67, Clair Tizon and Loon Plage in Normandy.

A plaque to the predecessor unit, the 10th Battalion, can be found at Villers-lès-Cagnicourt, commemorating the Victoria Cross action of Sergeant Arthur Knight, VC.