Tam o' shanter (cap)

A tam o' shanter (in the British military often abbreviated to ToS) or "tammie" is a name given to the traditional Scottish bonnet worn by men.

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.

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.

[citation needed] The tam o'shanter is generally in rough khaki wool, while the balmoral is in finer quality doe-skin of a pale tan or grey shade.

The velvet academic tam worn with a tassel is part of the ceremonial dress used at many universities to distinguish those holding a doctoral degree (e.g. Ph.D., Ed.D.)