- 1968
| Mar 15 | (My Lai) Captain Medina gathers troops for a pep talk. | Ref: 87 |
| Mar 16 | (My Lai) Assault on Son My Village; 450 civilians are murdered by American forces of Charlie Company. | Ref: 87 |
- 1969
| Apr 23 | (My Lai) Inspector General makes full inquiry. | Ref: 87 |
| Jun 13 | (My Lai) Hugh Thompson identifies William Calley as the officer present at My Lai. | Ref: 87 |
| Aug 04 | (My Lai) General Westmoreland orders the I.G. to turn over the investigation to the Criminal Investigation Division. | Ref: 87 |
| Sep 04 | (My Lai) Charges are brought against William Calley for his role in the My Lai incident. | Ref: 43 |
| Nov 13 | (My Lai) First Story of My Lai published. | Ref: 87 |
| Nov 14 | (My Lai) Second story published, with eyewitness accounts. Haeberle photos published. | Ref: 87 |
| Dec 13 | (My Lai) Secretary of defense reports that anyone involved in the killings will be prosecuted. | Ref: 87 |
- 1970
| Mar 10 | (My Lai) Captain Ernest Medina charged with murder in the My Lai incident. | Ref: 43 |
| Mar 14 | (My Lai) Peers Report delivered to Westmoreland. | Ref: 87 |
| Mar 17 | (My Lai) The Army charges 14 officers with suppression of facts in the My Lai massacre case. | Ref: 2 |
- 1971
| Feb 23 | (My Lai) Lieutenant Calley confesses & implicates Captain Medina. | Ref: 5 |
| Feb 26 | (My Lai) Charges against the officers not at My Lai dropped. | Ref: 87 |
| Mar 29 | (My Lai) Army Lieutenant William L. Calley Junior was convicted of murdering at least 22 Vietnamese civilians in the My Lai massacre. (Calley ended up spending three years under house arrest.) Charges against some other officers are dropped. | Ref: 87 |
| Mar 31 | (My Lai) William Calley is sentenced to life for his role at My Lai. | Ref: 43 |
| Apr 03 | (My Lai) President Nixon promises to personally review Calley's case. | Ref: 87 |
| Apr 07 | President Richard Nixon orders Lieutenant Calley (My Lai) free. | Ref: 5 |
| Aug 17 | (My Lai) The trial against Captain Ernest Medina for his role at My Lai commences. | Ref: 43 |
| Aug 20 | (My Lai) Calley's sentence reduced to twenty years for his role at My Lai. | Ref: 87 |
| Sep 23 | (My Lai) Medina acquitted of all charges after jury deliberates for 60 minutes. | Ref: 87 |
- 1973
| Dec 21 | (My Lai) Military Court of Appeals upholds Calley's conviction. | Ref: 87 |
- 1974
| Apr 16 | (My Lai) Calley's sentence reduced to ten years. | Ref: 87 |
| Sep 24 | (My Lai) William Calley's (of My Lai infamy) conviction reviewed by District Court. | Ref: 43 |
| Nov 09 | (My Lai) Calley released on bond. | Ref: 87 |
| Nov 13 | (My Lai) Peers Report released in part. | Ref: 87 |
- 1975
| Sep 10 | (My Lai) Calley paroled, after serving only three and a half years. | Ref: 87 |
- 1998
| Jan 10 | (My Lai) (month, day unspecified) Hugh Thompson honored in 30th anniversary commemoration for his heroism at My Lai. | Ref: 87 |
| Mar 06 | (My Lai) The Army honors three Americans who risked their lives and turned their weapons on fellow soldiers to stop the slaughter of Vietnamese villagers at My Lai in 1968. (XDG, p 4A, 3/06/2003) | Ref: 83 |
| May 10 | (My Lai) Ron Ridenhour dies of an apparent heart attack while playing handball. | Ref: 87 |
- 2000
| Jan 01 | (My Lai) Calley manages a jewelry store in Georgia. (He married the owner's daughter.) | Ref: 87 |
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My Lai Chronology