The soldiers of which nation committed the My Lai massacre?

The My Lai Massacre was an atrocity that was committed
during the Vietnam War.  It happened in March of 1968.  The soldiers who committed this
atrocity were Americans.

The only person who was actually
convicted of and punished for participating in the My Lai Massacre was Lt. William
Calley.  He was the commander of the platoon that committed the
atrocity.

In this atrocity, hundreds of Vietnamese
civilians were killed.  Many of them were attacked in other ways.  There were, for
example, rapes as well as evidence of beating and
torture.

This atrocity helped to turn public opinion in the
US even further against the war.