Zellbrigen

Time to break out the monocles and tea:

The proscriptions of zellbrigen consist of the following rules:
Each warrior will issue a challenge to a different enemy. If one side outnumbers the other, then the extra warriors on that side will stand aside until one of their comrades falls in battle. A warrior can challenge more than one unit at a time.

• A warrior has right to refuse challenges from Inner Sphere units, especially if underhanded ploys are suspected.
• A warrior has the right to refuse a challenge from an unit of differing weight class if other unengaged units are available.
• No artillery or other Area-Effect Weapons shall be employed by either side.
• Intentionally moving out of the line of sight of the opponent is prohibited.
• Systems that requires multiple units to operate, like C3 and TAG, are forbidden.
• Moving out of weapon range is prohibited.
• Failure to fire a weapon when possible is prohibited.

A warrior is also expected to not retreat from inferior foes, or to engage his opponent in melee combat, though these are not part of the formal rules of zellbrigen. Also, though it plays a central role in Clans' combat challenges, the ritual of batchall remains a separate tradition.