U.S. Maj. Gen. Harold Greene was visiting an Afghan military training academy Tuesday when he was shot dead by an Afghan soldier, who was subsequently killed. Afghan troops who knew the attacker say he disliked the Taliban and they aren't sure what his motive was. U.S. Army/Getty Images hide caption
The USS Donald Cook, a guided-missile destroyer, on patrol Saturday in the Black Sea. Mass Communication Specialist Seaman Edward Guttierrez III/U.S. Navy hide caption
Vietnam veterans Melvin Morris (center), Jose Rodela (obscured) and Santiago J. Erevia (left) received the Medal of Honor from President Obama at the White House on Thursday. Win McNamee/Getty Images hide caption
The photo that has offended many. The soldier responsible for posting it on Instagram has been suspended and an investigation has begun. Wisconsin National Guard Facebook page hide caption
New York Sen. Kirsten Gillibrand (center) and Missouri Sen. Claire McCaskill (right) are at odds over the best way to respond to military sexual assaults. J. Scott Applewhite/AP hide caption
The launch-key mechanism at the deactivated Delta Nine Launch Facility near Wall, S.D., in 2002. AP hide caption
U.S. soldiers look at a crane that tipped over while trying to move a CHU, or Containerized Housing Unit, at a small COP, or Combat Outpost, in southern Afghanistan. A dozen years of war in Iraq and Afghanistan have created a whole new military vocabulary. David Gilkey/NPR hide caption
Defense Secretary Chuck Hagel. Chip Somodevilla/Getty Images hide caption
Members of the U.S. Marine Corps listen to President Obama during his visit to Camp Pendleton, Calif., in August. Kevork Djansezian/Getty Images hide caption
U.S. Marines with 4th Force Reconnaissance Company slide off F470 Combat Rubber Raiding Crafts during training in Waimanalo, Hawaii. The French company Zodiac has been the U.S. military's choice for inflatable rubber rafts for roughly two decades. Now the company is making the rafts in the U.S. Lance Cpl. Reece E. Lodder/Marine Corps Base Hawaii hide caption
Downtown Cairo is plastered with huge posters of Gen. Abdel-Fattah el-Sissi, the U.S.-trained Egyptian army chief who helped overthrow President Mohammed Morsi. Amr Abdallah Dalsh/Reuters/Landov hide caption
The Afghan Local Police is a semi-volunteer force. They are minimally paid and minimally trained, and when the Americans leave, they will be left to defend their country on their own. David Gilkey/NPR hide caption