Knight service

Knight´ serv´ice

n.	1.	(Feud. Law) The military service by rendering which a knight held his lands.
	2.	(Eng. Feud. Law) A tenure of lands held by knights on condition of performing military service. See Chivalry, n., 4.By far the greater part of England [in the 13th century] is held of the king by knight's service. . . . In order to understand this tenure we must form the conception of a unit of military service. That unit seems to be the service of one knight or fully armed horseman (servitium unius militis) to be done to the king in his army for forty days in the year, if it be called for. . . . The limit of forty days seems to have existed rather in theory than practice.- Pollock & Mait.
	3.	Service such as a knight can or should render; hence, good or valuable service.

knight service

knight service:

see knightknight,
in ancient and medieval history, a noble who did military service as a mounted warrior. The Knight in Ancient History

In ancient history, as in Athens and Rome, the knight was a noble of the second class who in military service had to furnish his own mount
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