Army drops one murder charge against soldier accused in Afghan massacre Staff Sgt. Robert Bales, (L) 1st platoon sergeant, Blackhorse Company, 2nd Battalion, 3rd Infantry Regiment, 3rd Stryker Brigade Combat Team, 2nd Infantry Division, is seen during an exercise at the National Training Center in Fort Irwin, California, in this August 23, 2011 DVIDS handout photo. Credit: Reuters/Department of Defense/Spc. Ryan Hallock/Handout