The latest research suggests troops handle battlefield stress better, and avoid post-war problems more often, when they heal among their comrades. On a base in Afghanistan, Marines on the front lines help a comrade cope with his best friend’s death. A portrait of Cpl. Chad Wade hangs in 1st Platoon’s command post at Patrol Base Hernandez . Cpl. Wade was killed in December by a bomb buried on the path he was patrolling. The rest of the platoon rallied around Lance Cpl. Voie, just the kind of front-line, buddy-to-buddy intervention the Marine Corps is trying to institutionalize to avoid post-traumatic stress disorder among the troops. Here, 1st Squad leader Sgt. Albert Tippett, left, and Lance Cpl. Voie smoke and hang out with other Marines in the squad’s hooch. A Marine from 2nd Battalion raises the flag at Patrol Base Hernandez. The battalion was one of three in Afghanistan to have gone through the new combat-stress training before shipping out from the U.S.