The date is confusing, as the war started earlier and ended far later than 1966. But the Vietnam War at 50 commemoration presents a good opportunity to reflect on the war and whether we have learned anything from it.

Some 60,000 Americans were killed fighting in that war more than 8,000 miles away. More than a million Vietnamese military and civilians also lost their lives. The US government did not accept that it had pursued a bad policy in Vietnam until the bitter end. But in the end the war was lost and we went home, leaving the destruction of the war behind. For the many who survived on both sides, the war would continue to haunt them.

It was thought at the time that we had learned something from this lost war. The War Powers Resolution was passed in 1973 to prevent future Vietnams by limiting the president's ability to take the country to war without the Constitutionally-mandated Congressional declaration of war. But the law failed in its purpose and was actually used by the war party in Washington to make it easier to go to war without Congress.