It’s not quite as odd as the title sounds. I just added the below caption and image to the post, Serpent & Ophicleide: History and Images.
c. 1790—London, England: An engraving depicts a regiment of Foot Guards in front of St. James’s Palace. Included among the soldier-musicians is a serpent player (see below detail; public domain; Strachan, British Military Uniforms, pl. 27) (Scottish United Services Museum).