111 B.C. Chinese conquer what is now northern Vietnam 
A.D. 939 China ends its rule over the Vietnamese; an independent state is established.
1802  Nguyen Anh unites the country and calls it Vietnam.
1858-1883  France controls  Vietnam.
1940-1945 Japan control Vietnam during World War II.
1945 Viet Minh,a broad front of Vietnamese patriots and nationalists controlled by Communist Party,seize power.  Ho Chi Minh announces independence.
November, 1946 French forces attack Viet Minh in Haiphong, sparking war of resistance against France.
1950 Democratic Republic of Vietnam is recognized by China and the USSR.
1954 At Geneva Conference Vietnam is split into the North and South at the17th Parallel.  The Vietminh defeat the French.
1956 Ngo Dinh Diem (President of South Vietnam) begins campaign against political dissidents.
1957 Beginning of Communist insurgency in the South.
1959 Weapons and men from North Vietnam begin infiltrating the south.
1960 American aid to Diem decreases.
1962 Number of US military advisors in South Vietnam rises to 12,000.
November 1, 1963 Ngo Dinh Diem killed, Vietnamese military took over.
August 7, 1964 Congress adopts Gulf of Tonkin Resolution giving president broad military powers.
February 5, 1965 US begins strategic bombing of the North.
March 8, 1965  First US marines go ashore in direct combat role at Danang. 
January 30, 1968 North Vietnam and the Viet Cong begin new phase of the war known as the Tet Offensive. 
March 15, 1968 Captain Medina gathers troops for a pep talk.
March 16, 1968 Assault on Son My Village
March 29, 1969 Rob Ridenhour's writes letter descibing the My Lai incident and its cover-up.
April 23, 1969 Inspector General makes full inquiry.
June 13, 1969 Hugh Thompson identifies William Calley as the officer present at My Lai.
August 4, 1969 General Westmoreland orders the I.G. to turn over the investigation to the Criminal Investigation Division.
September 4, 1969 Charges brought against Calley.
November 3, 1969 Nixon announces "Vietnamization" program.
November 13, 1969 First Story of My Lai published.
November 14, 1969 Second story published, with eyewitness accounts.  Haeberle photos published.
December 13, 1969 Secretary of defense reports that anyone involved in the killings will be prosecuted.
March 10, 1970 Captain Ernest Medina charged with murder.
March 14, 1970 Peers Report delivered to Westmoreland.
March 17, 1970 Fourteen officers charged with offenses related to My Lai.
February 26, 1971 Charges against the officers not at My Lai dropped.
March 29, 1971 Charges against several officers at My Lai dropped.
March 29, 1971  Calley convicted.
March 31, 1971  Calley sentenced to life. 
April 3, 1971 President Nixon promises to personally review Calley's case.
August 17, 1971 Trial against Medina commences. 
August 20, 1971 Calley's sentence reduced to twenty years.
September 23, 1971 Medina acquitted of all charges after jury deliberates for 60 minutes.
January 27, 1973 The United States, North and South Vietnam, and the Viet Cong sign a cease fire agreement.
March 29, 1973 The last U.S. ground troops leave Vietnam.
July 31, 1973 Congress votes to end all bombing in Indochina and to ban any future military moves in area without prior congressional approval.
December 21, 1973 Military Court of Appeals upholds Calley's conviction.
April 16, 1974 Calley's sentence reduced to ten years.
September 24, 1974 Calley's conviction reviewed by District Court. 
November 9, 1974 Calley released on bond.
November 13, 1974 Peers Report released in part.
April 30, 1975 Saigon falls, the South is defeated and the war ends. 
September 10, 1975 Calley paroled, after serving only three and a half years.
1998 Hugh Thompson honored in 30th anniversary commemoration for his heroism at My Lai.
May 10, 1998 Ron Ridenhour died of an apparent heart attack while playing handball.
Today Calley manages a jewelry store in Georgia.  (He married the owner's daughter.)