Cover of "Clothing in the Trier Region during the early 19th Century" by Martha Heit.
He was dressed in "...jacket of gray cloth marked on front and back with the red-colored Latin letters B. G., short pants of a nondescript cloth, round hat, shoes and stockings." It was noted in the official entry that the escapee would quickly rid himself of the jacket with the red marking and try to obtain some clothing that would make him look like an ordinary citizen. With "dress coat and round hat" he could take on a new identity. It would seem from the description above that in 1816, men's pants were either long or short. If short, they reached below the knee, with stockings that covered the lower part of the leg.