The court-martial of 2nd Lt. William Calley begins. Calley, a platoon leader in Charlie Company, 1st Battalion, 20th Infantry, 11th Infantry Brigade (Light) of the 23rd (Americal) Division, had led his men in a massacre of Vietnamese civilians, including women and children, at My Lai 4 on March 16, 1968. My Lai 4 was one of a cluster of hamlets that made up Son My village in the northern area of South Vietnam.
The company had been conducting a search-and-destroy mission as part of the yearlong Operation Wheeler/Wallowa (November 1967-November 1968). In search of the 48th Viet Cong Local Force Battalion, the unit entered the village but found only women, children, and old men. Frustrated by unanswered losses due to snipers and mines, the soldiers took out their anger on the villagers, indiscriminately shooting innocent people as they ran from their huts. They then systematically rounded up the survivors, allegedly leading them to nearby ditch and killing them.