The Prince Edward Island Highlanders is another. This excerpt is from the National Defence website on Unit histories...

"Shortly after Prince Edward Island joined Confederation in 1873, the Canada Militia Act of 1875 reorganized all Militia units.
The forerunner of The Prince Edward Island Regiment was born, under the name of 82nd Queens County Provisional Battalion of Infantry. This Regiment sent a contingent of volunteers to the Boer War in 1899, earning the Regiment's first Battle Honour, South Africa.
The Prince Edward Island Regiment is a direct descendant of the Prince Edward Island Light Horse formed in 1901. During the Great War, the Prince Edward Island Light Horse helped to form part of the 6th Canadian Mounted Rifles, Canadian Expeditionary Force (CEF). An Infantry Battalion, the 105th Prince Edward Island Highlanders, CEF, was recruited from the 82nd Regiment. The 105th was broken up in order to provide reinforcements for other CEF battalions already at the front, primarily the 26th New Brunswick Battalion. First War Artillery units serving on the front recruited on Prince Edward Island were the 2nd Siege and the 8th Siege Batteries. First War battle honours earned by Islanders were Arras 1917, Amiens, and Pursuit to Mons.
In 1921, The 82nd Regiment became known as The Prince Edward Island Regiment, and in 1927 they were converted to the Prince Edward Island Highlanders with a close affiliation to the Black Watch, of the British Army."

And this bit is from Wikipedia...

"The Prince Edward Island Highlanders were allied to the Black Watch (Royal Highland Regiment) and were kitted as Black Watch except for badges. Officers wore grey Balmorals in Service Dress and Battle Dress."