User blog comment:MilitaryBrat/75th Ranger Regiment VS 3 Commando Brigade/@comment-4552610-20130111000348

Sniper: The Accuracy International Arctic Warfare is known for its accuracy and capable of firing larger rounds than the SR-25 ever can.
 * EDGE: Commando Brigade

Assault Rifle: both have the same round size and mag capacity. However the SA80 has the greater muzzel velocity and range.
 * EDGE: Commando Brigade

Shotgun: Pump Action vs Semi-Auto.... Another victory for the Commando Brigade.
 * EDGE: Commando Brigade

Pistol: I'll presume we are talking about the 9×19mm Parabellum variant of the P226. With that, the P226 wins it. It can carry over 15, 17, 18 and even 20 rounds. The M9 can only carry 15. P226 all the way.
 * EDGE: Commando Brigade

Melee: Just looking at the knifes, the Fairbairn-Sykes Fighting knife has more blade to it, in both length and being double sided. It will do more damage in the long run.
 * EDGE: Commando Brigade

Overall: I feel the Commando Brigade will win it. While loosing in tactics, their accuracy and training will get them the way. Add in the fact they have the better weapons and they win by far.