MARINE CORPS BASE QUANTICO, Va. – Officer candidates will now be training and running on trails named for some of the hardest battles fought by Marines during the recent conflicts in Iraq and Afghanistan. Col. Kris Stillings, commanding officer at Officer Candidates School, led a ceremony today here at Marine Corps Base Quantico, Va. He stood with officer candidates lined up in formation at the newly named intersection of Fallujah and Kunar trails. Sangin Trail, the third to be named, runs slightly to the north. “These trails, just like the other trails we have here … these names mean something,”…