To keep things in line and easier to keep track of, generally, the site uses a total of SIX court guard squads instead of the thirteen used in canon. The follow excerpt explains exactly what the Gotei 6 is.

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The Gotei 6 is the primary military branch of Soul Society and the main military organization most Shinigami join after leaving the academy.
The Gotei 6 serves as a military force with its primary responsibilities consisting of:

• The defense of the Seireitei, the center of Soul Society.
  
• The deployment of Division members into enemy territory for combat operations.
  
• The deployment of Task Forces as defensive measures in the Human World.
  
• The guiding of souls to Soul Society.
  

The Gotei 6 does not normally operate as a cohesive unit. The command of the divisions are generally left to the discretion of its particular Captain, who commonly runs it whatever way he or she sees fit, allowing for the change of a division's traditional duties to an entirely new set and even the creation of a separate institution connected to the division. The Gotei 6's main duty is to defend the Seireitei, but they are allocated districts in Rukongai to defend. In addition to these duties, Shinigami have to deal with the business of being assigned to the Human World.

The only general authority to call forth a combined front is an edict from the Central 46 Chambers, or more often the Captain-Commander. It is not uncommon for captains to not see each other as a whole group for long periods of time, except for cases involving a threat to all of Soul Society, a captain's punishment, or, to a lesser degree, a captain's promotion. On a regular basis, the captains are spread out all across Soul Society doing their divisions' duties, whatever they may be. They are so far spread out, getting the captains together as a group, or even getting their lieutenants together as a group, could normally take a day to accomplish.

Unless specifically ordered by the Captain-Commander, captains can choose whether or not to attend meetings (at their own risk) or not even involve themselves in the daily situations of Soul Society. Captains are not allowed, without permission, to carry out activities outside of their normal jurisdiction or their division. The captain of one division cannot punish the subordinates of another captain.

As with any army, the Gotei 6 has ranks. There are 20 ranks for officers, but no ranks for non-officers. The lower the number is, the higher the rank. The ranks and their descriptions are below, from highest to lowest in terms of strength. The Gotei 6 is an organization with a merit-based hierarchy. It has disposed of the system of rank based on seniority. Abilities are the only thing used to determine one's rank.

Captains are generally the most respected Shinigami within the Soul Society. With one exception, all captains are able to utilize the final stage of their Zanpakutō, and are far more powerful than even their lieutenants. Knowing Bankai gives captains an average of five-to-ten times the strength of Shinigami who are unable to perform it. They have extensively trained, if not mastered, their Bankai, allowing them to use the enormous power effectively in battle. Most captains are skilled in the use of Shunpo and Kidō, and generally have extensive knowledge of Shinigami history and battle tactics. All of these factors create a vast power gap between captains and lower-ranked officers.

Lieutenants function as executive officers for their division, taking care of or supervising day-to-day operations. Along with their captains, they are not assigned to one specific squad. They generally only know the Shikai of their Zanpakutō but they are still the second strongest in their division. In the case of a division captain's death, departure, or other circumstances making him unable to perform their duties, the lieutenant acts as the "substitute captain" until another can be assigned.

The authority to appoint or dismiss a lieutenant lies solely with the captain of the respective division, a privilege which was granted to them with the support of the Central 46 Chambers. Captains reserve the right to appoint multiple lieutenants at a single time, though this is rarely done due to it being both considered highly unorthodox and heavily frowned upon by the Central 46 Chambers. Though rarely exercised, any potential candidate retains the right to decline the nomination.

Seated officers are the remainder of the officers in the Gotei 6 which hold ranks at or below 3rd Seat. Captains and lieutenants have the ranks of 1st and 2nd Seats, respectively. Next to that, there are 18 more seats (3rd-20th). In the Gotei 6, only one person can hold a senior officer rank (such as 3rd or 5th seat), but there are several holders of junior officer ranks (e.g. 20th seat).

While you are not required to join a squad until the Rank of 3, it is highly recommended that you do so as soon as possible. While anyone under Rank 3 cannot rise higher than the 7th seat, the recommendation stands. Rank 3 can get up to 5th seat, Rank 4 up to 3rd, with Lieutenant and Captain being special positions. Keep in mind that the Squad system is mainly considered RP fluff and character development, and will likely not hold much more behind it than that. To attain a position, you simply post in this topic which you'd like for which division and you'll be added in.

To become a Lieutenant of a division you A. Need the Captain's approval (which can be determined either by the handwave of an Admin deciding okay or a quick RP between your character and the NPC-controlled Captain; unless that Captain is currently a player character, which requires you to RP with them) and B. be at least Rank 4, though Rank 5 is considered a better choice. You cannot take the Lieutenant seat of someone who currently occupies it and along with the Captain-Commander position Lieutenancy of Squad 1 is not applicable.

To become a Captain of a division you HAVE to be AT LEAST Rank 5, though you're strongly urged to be Rank 6 before trying. This is because some Captains will require you to best them in combat to let you have the seat and they are all Rank 6 as is. With that, all Captains are currently NPCs controlled by the admins when the need arises. Some Captains will simply require you to prove to them that you're worthy of the position and might step down.

The Captain position gives you a length of power over your Division, as does the Lieutenant position, and should be treated with caution. While it is unlikely any staff will step in should you be abusing your power in a roleplay sense, if you are causing a member of your squad OOC misery you might be forced to step down.

The current Squad Listing [can be found here].