TRAP!!

TRAP
A large group of Isis fighters in Afghanistan are moving down a road
when they hear a voice call from behind a sand dune: "One Marine is
better than ten Isis fighters".
The Isis commander quickly orders 10 of his best men over the dune
where a gun-battle breaks out and continues for a few minutes, then
silence.
The voice once again calls out: "One Marine is better than one
hundred Isis fighters."
Furious, the Isis commander sends his next best 100 troops over the
dune and instantly a huge gun fight commences. After 10 minutes of
battle, again silence.
The Vietnam Veteran calls out again: "One Marine is better than one
thousand Isis fighters." The enraged Isis commander musters 1000
fighters and sends them to the other side of the dune.
Rifle fire, machine guns, grenades, rockets and cannon fire ring out
as a terrible battle is fought .... Then silence.
Eventually one badly wounded Isis fighter crawls back over the dune
and with his dying words tells his commander, "Don't send any more
men...it's a trap. There's two of them."

(other than the typo "The Vietnam Veteran calls out" didn't get changed to "the Voice")