What is Knights Of The Bath?

Legal Definition
An order instituted by Henry IV., and revived by George I. They are so called from the ceremony formerly observed of bathing the night before their creation.
-- Black's Law Dictionary
Legal Definition
In English law. A military order of knighthood, instituted by Richard II. The order was newly regulated by notifications in the London Gazette of 25th May, 1847, and 16th August, 1850. Wharton.
-- Black's Law Dictionary
Legal Definition
An order of knighthood ranking after baronets. See 1 Bl. Comm. 403.
-- Ballentine's Law Dictionary