In a mission code-named Operation Ranch Hand, the U.S. military unleashed millions of gallons of the toxic defoliant during ...

Eventually, international laws concerning chemical warfare were established. The U.S.’s heavy reliance on aerial warfare led to arguably the most infamous element of the Vietnam War: widespread ...

In observance of the coming 50th anniversary of its conclusion, here are nine key moments that defined the Vietnam War.

ENDING the Vietnam conflict. The war was estimated to cost about $200 billion. Anti-war opinion increased in the United States from the mid-1960s on, with rallies, teach-ins, and other forms of ...