Laconic / Red vs. Blue

Using Halo as its setting, tools, and characters, two groups of soldiers fight each other (and occasionally the other team) in a box canyon in the middle of nowhere. At least, that's how it starts....
Visit the unabridged version in a box canyon in the middle of nowhere HERE

http://tvtropes.org/pmwiki/pmwiki.php/Laconic/RedVsBlue