From Reuters:

A survey of public records by The New York Times found at least 121 U.S. veterans of Iraq and Afghanistan committed a killing or were charged with one after returning home from duty, the newspaper reported on Saturday.The Times said the numbers indicated a nearly 90 percent increase in homicides involving active-duty military personnel and new veterans for the six-year period since the 2001 invasion of Afghanistan. Neither the Pentagon nor the Justice Department tracks such killings, which are handled by civilian courts. An Army spokesman said the report did not offer a complete picture.