Democratic Senator John Walsh said he was suffering from post-traumatic stress disorder from his service in Iraq when he failed to attribute conclusions and verbatim passages lifted from other scholars' work in his master's thesis at the US Army War College.
US military commanders are trying to cope with an epidemic of suicides within the armed forces. Officials say they are frustrated by a recent law, backed by the NRA, that makes it difficult to talk to soldiers about personally owned firearms.
Twenty percent of active-duty Army troops are on at least their third tour of duty to a war zone. Sgt. Robert Bales, suspected of slaying 17 Afghan civilians, was one. Here's what's known about the dangers of repeated deployments.