In the more than three-score years I've worn a kilt, I've only once worn a plaid, and that was when I got married. The end of the plaid passed under the epaulette and was secured in place by a loop that slipped over the button on the end of the epaulette. The plaid-brooch was then attached to the plaid, high up on the shoulder, the pin passing through two loops sewn onto the plaid.