Ubisoft's latest trailer for Rainbow Six: Siege showcases the British Counter Terrorism Unit. This team specialties are rappelling, aerial assault, gas attacks and badassery.

Since Rainbow Six: Siege deals in terrorist vs. counter terrorist gameplay, it consists of some of the best special forces units throughout the world, and Ubisoft has revealed the first of these forces: the Britsh Counter Terrorism Unit. Founded in 1941 and having over 240 operators throughout the world, these guys are the best tactical response team in the UK. They specialize in rappelling, aerial assaults, top-down entry and using toxic gas to suppress any would-be terrorists, but we're sure Ubisoft will be making things quite balanced for both sides.

Here's what Ubisoft's description mentioned about Rainbow Six's revamped gameplay:

-THE RULES OF SIEGE: Five versus Five. Attack versus Defend. Infiltrate versus Fortify. Team-based strategy meets intense, tactical combat.
-WORLD'S ELITE COUNTER-TERRORIST OPERATORS: Choose your Operator and wield their unique ability to breach or defend the objective as a part of an elite team.
-DESTRUCTION AS A TOOL: Walls can be shattered; floors and ceilings can be breached. Mastering the tactical use of destruction is the key to victory.
-CLOSE-QUARTERS COMBAT: With tight spaces shaping all combat arenas, tense encounters and up-close-and-personal firefights abound within every Siege.

While no release date has been announced, Rainbow Six: Siege is expected to come out this fall for PC, PlayStation 4 and Xbox One. After some leaked alpha footage hit the Internet, Ubisoft decided to reveal the existence of Rainbow Six: Siege's closed beta, which you can sign up for at the game's official website.