Here you may find the Master of Training's list of Warders and Trainees.
A book about promotions and related information lies before you.
Here you may find information about our training regime.
Here may be found the library of the Warder Yards.
Beyond this door you can find the leaders of the Gaidin.
Doors out to nearby locations in the Tower are behind you.
Warders are anyone sworn to protect Aes Sedai or Asha'man. This includes Gaidin, who have raised through
the ranks to earn the fancloak, and bonded Asha'man. Drin'far'ji are the lowest rank of training Gaidin, and Ji'alantin are the intermediate rank. The rank Sa'ji'alantin is one earned through outstanding achievements during their learning period. Sa'ji'alantin are granted a seat in the Council of Youth.
Gaidin are male non channeling Warders and Gaidar are their female equivalent. (Note, because it is the "traditional" practice in reference to these terms, and because it is more common, I will refer to a individual Gaidin and Gaidar as "he". Likewise, because Aes Sedai bond Gaidin more commonly than Asha'man bond Gaidar, I will refer to bonding Channelers here as "she".)
While the One Power is a useful tool, it is not omnipotent. A Channelers cannot use the One Power as a weapon in most circumstances. Her Warder is there to be her weapon. The Power requires a lot of concentration and focus, and a channeler usually can't weave the Power and watch her surroundings at the same time. Her Warder is there to protect her when she can't pay attention, and for when she is shielded, and drained from the tiring activity of channeling. In addition, Gaidin are especially trained with skills such as stealth, ambushing, lockpicking, shadow lore, and wilderness survival that prove to be advantageous when coupled with a channelers. While a channelers can sense another channeling even at great distances, he or she can not sense an approaching Warder. Because Aes Sedai are widely hated, many times they must travel in secret, and a Warder is crucial to her survival when the situation does not allow for her to channel. Warders are not bound by the Three Oaths and so may lie, attack preemptively, and even torture those he and his charge encounter. See an In-Character role-played discussion of this topic in the Warder Library here.
A Warder's bond grants him a very quick rate of healing, the ability to go for long periods of time without food, water, or rest, a sense of her physical condition, shielded dreams, and the ability to sense the taint of the Dark One. A Warder can also draw on his Aes Sedai's strength, and will be able to sense if the Bond is broken.
An Aes Sedai can sense if her Warder is alive, and when he dies, she will be able to tell how and exactly when he died. She can sense his injuries, and approximately what direction he is in. An Aes Sedai can also draw on her Warders strength.
The Whites, Blues, Yellows and Browns can each Bond one Warder. The Indigo Ajah used to be able to Bond two, but that has been reverted back to one. In the Wheel of Time books, members of the Green Ajah may bond as many Warders as they wish. In this Tower, however, they are limited to four for reasons of practicality. This precedent was challenged in the Hall of Sitters, but the Warder Yard overwhelmingly supported the traditional view of "all but Green Ajah can bond one Warder."
In the past, Warders haven't always had a choice in receiving the Bond. However, in the present day, almost every Bond is taken up voluntarily. In the Grey Tower, all that is required for the Bond is an OOC agreement and notification of the Warder-Channeler Representative through the Bond List. If either the Warder or his Aes Sedai are not yet fully raised, they may become Promised, which functions along the principle of engagement.
The Warder Yard is run by the Warder administrators which are: the Master of Arms, the Gaidin Captain, the Master of Training, and the Warder-Channeler Representative.
The Master of Arms, currently Caden Ives Gaidin, oversees the Warder Yards and assists the Amyrlin Seat and M'Hael in running the Tower. The MoA helps guide the discussions in the Hall of Sitters along with the Amyrlin and M'Hael, as well as voting and organizing the votes of others when the Hall is called to session. The MoA is expected to make him/herself available to members of the Tower for roleplay as well as questions and concerns. He or she is a large presence in the Yards, IC and OOC. Along with the Amyrlin and M'Hael, the Master of Arms is expected to help handle matters of OOC discipline and enforce the rules of the Tower. The MoA is the officer in charge of approving and adding Benefit requests, Weapon skill points, and administering the Blademaster test. He or she is also expected to step in and help other officers with questions and site updates as needed. The Master of Arms is elected once a year by all fully raised members of the Tower.
The Gaidin Captain, currently Lysira 'Mouse' Viathene Gaidar, is the officer primarily responsible for site updates along with the Keepers. The GC adds new Yard members to the site, archives fanfiction and roleplays, and updates pages to reflect raisings and changes in rank. He or she is responsible for keeping the Warder member lists updated, creating message boards, and fixing errors found around the Warder Yards and the rest of the site. The GC is expected to listen to the members of the Warder Yards concerning issues in the Hall of Sitters, and discuss and vote accordingly. In character he or she is the general of the unbonded Warders, leading them in war time; available in the Yard for questions and/or concerns, as well as assisting with training. The Gaidin Captain is elected by the Hall of Sitters.
The Master of Training, currently Jip Gaidin, is in charge of accepting new members to the Yards as well as the training and promotion of the Warders-in-Training. This includes organizing Warder Yard classes, often supplementing classes of his or her own (especially weapon skill classes), judging raising test requests, is chiefly responsible for Training, mediates Evaluations and Spars, and guides the Council of Youth along with the Mistress of Novices and Master of Soldiers. He or she is the main Officer in charge of relaying updates in the Class List to the GC, to update the Raising Forms, and assigning mentors to new Trainees. In character, the MoT is a constant presence in the Yards, training and teaching classes personally, and organizing Trainers and class instructors; is the first authority on Trainees discipline; and raises Trainees through the ranks. He or she speaks and votes in the Hall of Sitters as a representative of the Warders-in-Training. The Master of Training is elected by the Hall of Sitters. 
The Warder-Channeler Representative, currently Storm Ananke Sedai, is both a channeler and a warder officer, and as such the position may be held by a channeler or non-channeler. He or she networks communication and aid between the channelers and warders of the Tower. He or she also process the Sa'ji'alantin/dar applications, announces these raisings, and informs the GC about the required updates. Further, he or she compiles and send out the Warder Eyes and Ears Report and updates the Warder Q&A page. The WCR may speak in the Hall of Sitters, but this position does not grant the holder a vote in the Hall of Sitters. He or she is in charge of updating the bond, promise, and bondable listings, as well as assisting in site updates. The WCR is responsible for stepping in to temporarily fill any vacant admin positions. In character, the WCR is equivalent to the MoN/S/T, and is available to roleplay and answer questions for Tower members. He or she is in charge of bonds both IC and OOC. The Warder-Channeler Representative is appointed by the Amyrlin Seat, M'Hael, and Master of Arms.To join the Warders, go here and fill out the form on that page. Under "What will you join us as?", select "Drin'far'ji". Under "What Ajah are you aspiring to?" select "N/A (Warder)".
If your question is Warder-related, email one of the officials. If your question is not Warder-related, try checking the Grey Tower FAQ.