Knight banneret
A knight banneret, sometimes known simply as banneret, was a medieval knight who led a company of troops during time of war under his own banner (which was square-shaped, in contrast to the tapering standard or the pennon flown by the lower-ranking knights) and was eligible to bear supporters in English heraldry. The military rank of a knight banneret was higher than a knight Bachelor (who fought under another's banner), but lower than an earl or duke.