Canada 43rd Regiment The Duke of Cornwall's Own Rifles cap badge, WWI

In 1881, the unit was stood up as the 43rd "Ottawa and Carleton" Battalion of Rifles.
In 1902, the regiment so impressed the Duke of Cornwall (later King George V) that he became the Camerons' first honorary colonel and allowed the regiment to bear his name. The regiment was then known 43rd Regiment, Duke of Cornwall's Own Rifles.
After WWI the 43rd Regiment was reorganized and renamed on several occasions. In March 1920 it was converted from line infantry to a highland regiment and renamed The Ottawa Regiment (The Duke of Cornwall's Own).