scutage

noun

1. (countable, historical, uncountable)A tax, paid in lieu of military service, that was a significant source of revenue in England in the twelfth and thirteenth centuries.

   “The land tax, in its modern shape, has superseded all the former methods of rating either property, or persons in respect of their property, whether by tenths or fifteenths, subsidies on land, hidages, scutages, or tallages”

   “The wars and the maladministration of Richard I and John forced these kings more and more to count on extraordinary revenues, to multiply aids and especially scutages.”