Back to the Seven Years War again with another set of colours inspired by the Napier illustration from the JSAHR article from Vol. 9, No. 38 (OCTOBER, 1930), p. 243. Good to depict a regiment without a blue regimental colour!.
Again, no point re-inventing the wheel with a long text as there is the detailed Kronoskaf page on the regiment here with uniform details too: https://www.kronoskaf.com/syw/index.php?title=27th_Foot

