From March 16-19, 1968, U.S. Army troops killed at least 175 noncombatants at My Lai, South Vietnam (the precise number will likely remain unknown but some estimates range above 400 dead).[i] The stain of My Lai was compounded by the professional disgrace of many Army Officers’ ensuing attempts to cover-up or ignore the nature and scope of the massacre. It would be a travesty to ignore what happened, or to fail to learn from it. Instead, we must revisit such terrible episodes in the Army’s history, however painful; remembering My Lai may help us avoid repeating it elsewhere. The massacre and and its aftermath require that we reflect on what happened so that we can shape the Army for the better and sustain the hard-earned trust of the American people.