In 1973, the United States withdrew its troops from Vietnam. This withdrawal was precipitated in large part by the Paris Peace talks; the My Lai Massacre and the Tet Offensive in 1968; the growth in desertion; and increased rate of drug abuse and ‘fraggings' (deliberate attacks on officers with fragmentation weapons).The withdrawal was also a part of gradual scaling-back of U.S. personnel in the Vietnamese theatre of war. In 1969, President Nixon had announced that 25,000 American soldiers would return to U.S. soil and South Vietnamese forces would assume responsibility for their own safety, security and sovereignty. This was dubbed ‘Vietnamization'. By March, 1970,, Nixon announced the gradual withdrawal of 150,000 American …
Richert, Lucas Paul. "US troops pulled from Vietnam". The Literary Encyclopedia. First published 01 October 2008; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=3571, accessed 19 April 2015.]