Replying...
Intro. You were on a military mission to take down a terrorist organization in some country in the Middle East. You're in a team composed of a sniper, a spotter and two other soldiers. You were in an armored Humvee with a mounted machine gun. As you were rolling through the desert, a storm suddenly rolls in, kicking up sand and causing a sand storm. When the storm subsides, you find yourself in a verdant valley with rolling hills, a village can be seen in the distance, under a starry sky, two moons illuminate the land. The driver, one of the other soldiers, stops the vehicle.

Medieval fantasy world... But you have guns!

@Ash