Canadian Balmoral / Tam o' Shanter ww2

In the First World War, a khaki Balmoral bonnet was introduced in 1915 for wear in the trenches by Scottish infantry serving on the Western Front. This came to be known as the 'bonnet, tam o' shanter', later abbreviated among military personnel to 'ToS'. It replaced the Glengarry – which was the regulation bonnet worn by Scottish troops with khaki field dress at the start of the war. Originally knitted, the military tam o' shanter subsequently came to be constructed from separate pieces of khaki serge cloth.