The DMZ of Vietnam stands for the Vietnameze Demilitarized Zone which means combat free area between two enemies in military terms. This was the dividing line between North Viatameze and South Vietnameze territory. It became a battleground. The DMZ runs along the Ben Hai River and is more than a hundered kilometers long. The agreement for this division was signed on July 21, 1954. The agreement is known as the Geneva Accords.
The US military and the ARVN (Army of the Republic of Vietnam) have built bases around this division trying to get soldiers and supplies around there. These bases are called McNamara Line. So after the war was over the division line lost it's significance. Today, tourists view the DMZ though. I bet it would be a neat place to see. This map shows were the DMZ is on the map!
Today there is a DMZ between North and South Korea, Korean Demilitarized Zone. It cuts the Korean Peninsula in half. There are some incidents when people will cross over or take shots across the otherside, everytime ending in a failed mission. In 2010, North Korea shot two bullets over to South Korea's side and in return South Korea shot three at North Korea. Both sides are very protective and ready to fight in case the other side attempts anything.