The U.S. Army says it has no record of a man who claimed to have "slaughtered" hundreds of civilians while serving with the Army Rangers in Iraq.Jesse MacBeth, appearing in a 20-minute video produced by Randy Rowland, a 1970s antiwar activist, claimed to have personally killed 200 people, many of them at close range, while on patrols with the Army Rangers during his 16 months in Iraq before being discharged due to wounds he received.