it depends
Blade
Spetsnaz. spetsnaz use heavy fighting skills which could beat anyone in Sas in hand to hand combat, Spetsnaz climb up each other like a human latter to get into a hotel that is barricated via window, and spetsnaz use countless hours of tactics and have a higher succsess rate with counter terrorism, hostage situations and gun skills SPETSNAZ WOULD BEAT SAS ANYDAY
This fight would never happen, no matter how you look at it.
There is no official answer, but it would likely be the British SAS, the US Navy Selas or the Russian Spetsnaz.
An AT-AT would definitely win.
carcharodontosaurus would win
Yeah... I would!
lion
A spartan
The Shark
shark