Warder-Liege

Warder-Liege or Warder-Liege Compact is a term created by Jacqueline Lichtenberg for her Kraith universe and stories.
The concept and practice was likely utilized by Lichtenberg first in the 1972 Star Trek: TOS novel, Federation Centennial. 
Historically, a liege is an unconditional bond between a man and his overlord. In Lichtenberg's fanworks, the Liege (Spock) has total control over all the actions, and even over the life of his Ward (Kirk). The Ward is allowed no independent thought, is obliged to allow no harm or discomfort to come to his Liege, and must obey him in all ways. 
As amateur author Sondra Marshak became involved with Kraith, she used the Warder-Liege to introduce more explicit D/s ideas along with other power kinks. Despite the spanking and BDSM-y elements, should be noted that Marshak insisted there was no slash in her work, one of which was the highly-popular The Price of the Phoenix. 
 
==Its Role in "Federation Centennial"==
From a fan's much longer description and review of Lichtenberg's 1972 novel, Federation Centennial: 
==Utilized in Practice by Some Fans==
It was symbolically practiced by members of the fan club, Society for Earthbound Vulcans. The club published what they called their "Warder-Liege Compact" in the form of the 1977 zine, The Worlds of 40 Eridani.
In October 1974, in the second issue of their newsletter, Mind-Meld, the editor describes it: 
Lichtenberg was a member of Society for Earthbound Vulcans, and in the March 1975 issue issue of Mind-Meld, adds some clarifications: 
==Fanworks==
* The Maze (1976), a Kraith installment by Joan Winston (Metamorphosis #2, 1976). Kirk, while studying on Vulcan, is in a "Warder-Liege compact" with Spock. This is "the most formidable tool for training the mind ... a highly artificial arrangement ... The Liege has total control over all the actions, and even over the life of his Ward. The Ward is allowed no independent thought, and is also obliged to allow no harm or discomfort to come to his Liege." Kirk is put in an impossible bind: he must disobey an order, to save Spock's life. In ancient times the punishment was being branded in the face, but the pair settle on spanking as a punishment that will not permanently harm Kirk but that he will never forget. One reviewer called this "either a ridiculously serious story or a seriously ridiculous story." A sequel by Mariann Hornlein, "From Both Sides" (Galactic Discourse #2), has Kirk attempting ultra-Vulcan behavior in order to show Spock and Sarek that this isn't what they want.
* Spock's Inflammation by Margaret Draper (printed in Deep Grope, 1977 and Menagerie #12, 1977) (One fan calls it a "a marvelous Kraith-parody, a must-read for anyone familiar with but critical of the Jacqueline Lichtenberg, et al, Kraith series. For a reader unfamiliar with Kraith, much may be confusing, but it's still an amusing story, & may encourage readers to sample Kraith. This story was to have a sequel, "Kirk's Constipation", in a later issue of GROPE. It is illustrated with marvelous Gordon Carleton cartoons--a perfect choice! There isn't too much of a coherent plot- but in this it resembles some of the more interminably continued aspects of Kraith. It begins with a non sequitur: Kirk has difficulties lighting the sacred Vulcan idlomputt (to make Spock's morning tea), & reflects that this Warder-Liege relationship is a tricky business. from a much longer review at Not Tonight Spock! #10 
* The Worlds of 40 Eridani by T'Pela (1977) ("A Warder-Liege Compact Unit Published by The Society for Earthbound Vulcans. Edited by Head Elder T'Pela. Approved by the Council of Elders.")
==References==