Hierarchical military structure, by rank, on how orders and complaints are filed and petitioned.
"You know what the chain of command is? It's the chain I go get and beat you with 'til ya understand who's in ruttin' command here." -Jayne Cobb -
A large whip, made of metal links (usually iron or titanium) which is used to keep the fourth years in order at RMC on 200 DTG. It is located in the basement of Currie Building and can cause massive amounts of pain.
Bitches actin up? Scrap that ass with the Chain of Command