Original: 1970 & ndash ; Vietnam War : Operation Jefferson Glenn begins : the United States 101st Airborne Division and the South Vietnamese 1st Infantry Division initiate a new operation in Th a Thiên - Hu Province .
Simplified: 1969 - My Lai Massacre : Lt. William Calley is charged with six specifications of premeditated murder for the death of 109 Vietnamese civilians in My Lai .