Long's Light Lancers
The colors of the First Highlanders are green and red, usually applied in a plaid.
Per FM:Periphery, page 40.
To maintain their ties to the Canopian Highlanders regiment, the insignia of the Magistracy Highlanders is a tam-o'shanter cap atop Canopus IV “ changed from the stylized world of the original unit. The logo of the First is a set of bagpipes, filled with stars. Per FM:Periphery, pages 26 and 40.