From the fan club's website:
For the past 15 years, Sam’s Army has been promoting the sport of soccer by encouraging fans to attend games and stand and sing together. During this time, we have had unofficial Brigades in parts of the U.S. and we are excited to bring more structure and support to Brigades. We are now taking the next step in the evolution of Supporters Clubs in the U.S. by forming Official Brigades.
We are excited at the thought of having Brigades all over the country and around the world promoting the game and supporting the National Teams. Brigades will more than enhance the growth of the sport in the U.S. and will provide an infrastructure for Sam’s Army SC members to organize on a new level.
We are pleased to announce the first Official Brigade in Miami, FL. The Miami Ultras are a group of supporters about 300 strong.