So a fun fact I found today. While doing some research on the regiment during my off time, I learned there was a Captain Parsons that served during the Peninsula Campaign in 1813 with the 1st Battalion.
Also Walko on those uniforms, one thing gets me. Everything I see tells me that at Waterloo, the 27th wore high-topped shakos like the KGL hats you see in-game. The one in that picture is a more standard shako like the 33rd wear. Never really figured that one out.