Marines with 3rd Light Armored Reconnaissance Battalion traverse the desert on the way to set up a forward combat operations center during Exercise Desert Scimitar, April 12, 2015, aboard the Combat Center. Division-level exercises, such as Desert Scimitar, allow division units to train in order to maintain mission readiness. - Marines with 3rd Light Armored Reconnaissance Battalion traverse the desert on the way to set up a forward combat operations center during Exercise Desert Scimitar, April 12, 2015, aboard the Combat Center. Division-level exercises, such as Desert Scimitar, allow division units to train in order to maintain mission readiness.