Thank you gentlemen for the feedback. I have done numerous internet searches but haven’t found the particular plate concerning Prussian dragoons in 1806. I have the Osprey & Hourtoulle works. the Osprey work is sketchy on details and the Hourtoulle work is wrong I believe as to the color of the Queen’s 5th Dragoons. The Kronoskaf & Nec Pluribus Impar websites are excellent but cover the SYW period only. They both show that the 5th had a white Leibstandart and a black Ordenstandart when they were the Margrave of Bayreuth’s regiment. Queen Louise didn’t become colonel of the regiment until May of 1806. So my assumption is that they carried these flags in October of 1806. Other references I have found online conclude the same. The Jack Girbral painting of the capture of this flag by hussar Studer of the French 7th Hussars shows a red or maroon flag. I believe that is inaccurate. My friend John Sanheim has done much research on flags has indicated to me that the Hourtoulle books are often in error on Russian flags.