Lt William Calley deserves a special place in hell. He was a stupid racist individual who murdered a large number of women and children.
American servicemen despise criminals like this man. What he did was directly opposite to what every man is taught - respect civilians. It is against the Geneva Convention, the Uniform Code of Military Justice, and common morality to kill or harass civilians.
Many of his men did not follow his orders to kill children and women. But some of them did. They all deserve that special place in hell.
What they all should have done was stop Calley - Arrest him, physically restrain him, or kill him if that was necessary. They did not, and forever shamed their unit and the United States of America.