http://home.mweb.co.za/re/redcap/vietcrim.htm<snip>"During the years of 1969 down to 1973, we have the rise of fragging - that is, shooting or hand-grenading your NCO or your officer who orders you out into the field," says historian Terry Anderson of Texas A & M University. "The US Army itself does not know exactly how many...officers were murdered. But they know at least 600 were murdered, and then they have another 1400 that died mysteriously. Consequently by early 1970, the army at war not with the enemy but with itself." Rough figures for "fraggings" are indicated in column a. below.http://www.google.com/search?hl=en&q=fragging+during+vietnam+war&btnG=Google+Search