Vietnam By bsnyder Period: Jan 30, 1968 to Sep 23, 1968 Tet offensive Mar 16, 1969 My lai May 4, 1969 Kent state shootings Jun 8, 1969 vietnamization Apr 28, 1970 U.S. invades cambodia Jun 13, 1971 The pentagon papers leaked Apr 30, 1975 End of the war