http://www.usvetdsp.com/story13.htmexcerpt:
As an Army officer, Powell's superiors considered him a consummate "team player." They could count on Powell to haul their water despite any contradictory feelings he may have had. Powell's blind loyalty was demonstrated during a second tour in Vietnam (1968-1969), where as deputy assistant chief of staff for operations G-3 at Americal Division headquarters in Chu Lai, he was asked to handle a potentially embarrassing letter a young soldier had written to Gen. Creighton Abrams, commander of all U.S. forces in Vietnam.
The soldier had written about rumors of a massacre that Americal Division soldiers had committed in the hamlet of My Lai 4 in South Vietnam. Although he did not mention My Lai in the letter, the soldier complained that Americal soldiers were indiscriminately killing Vietnamese civilians. Such acts, the young soldier warned, "are carried on at entire unit levels and thereby acquire the aspect of sanctioned policy."
Several days after he received a copy of the letter, Powell sent a memo to his superior, the adjutant general, making the outrageous claim that the young soldier had not given enough specifics upon which to base an inquiry. The purposely blind Powell said the soldier's charges were false except for "isolated instances." He wrote that "relations between American soldiers and the Vietnamese are excellent." Powell's damage control efforts soon proved fruitless and the My Lai massacre burst onto the world stage like an atomic explosion, severely damaging the U.S. war effort in Vietnam. On the orders of Lt. William Calley, soldiers from the U.S. Army Americal Division had indeed indiscriminantly gunned down an entire village of men, women and children.and
http://www.nationmaster.com/encyclopedia/My-Lai-MassacreCover-upInitial investigations of My Lai were undertaken by the 11th Brigade's CO, Col Oran Henderson, under orders from Americal's Ass't CO, BG Young.
Six months later a young soldier of the 11th Light Infantry (The Butcher's Brigade) named Tom Glen, wrote a letter accusing the Americal division (and other entire units of the US military, not just individuals) of routine brutality against Vietnamese civilians; the letter was detailed, its allegations horrifying, and its contents echoed complaints received from other soldiers. Colin Powell, then a young US Army Major, was charged with investigating the massacre. Powell wrote: "In direct refutation of this portrayal is the fact that relations between American soldiers and the Vietnamese people are excellent." Later, Powell's refutation would be called an act of "white-washing" the news of the Massacre, and questions would continue to remain undisclosed to the public.
Independent investigative journalist Seymour Hersh broke the My Lai story on November 12, 1969 and on November 20 The Plain Dealer (Cleveland) published explicit photographs of dead villagers killed at My Lai. The carnage at My Lai would have gone unknown in history if not for another soldier who, independent of Glen, sent a letter to his Congressman.
(edited becuz I kant spull)