South Vietnam
Both were aimed at containment of communist expansion.
They used guerilla tactics
Korea was force on force. Vietnam (ya had to find em!); so it was "search and destroy." Although, it must be said, that there were AOs (Areas of Operation) in South Vietnam, where the NVA didn't have to be looked for...they looked for you!
a communist state. Also It has an unlimited government and its an authority based government. The Socialist Republic of Vietnam is a single-party socialist state having a communist government.
Strategy-Attrition Tactic-Search & Destroy
US strategy was primarily based upon "attritition", which resulted in the tactics of "Search and Destroy". A function which required the counting of enemy bodies, which in turn created the term, "body count". The Vietnam War, became a war of body counts.
Direct military intervention in south east Asia by the United States to curb the spread of communism failed. The most notable failure was Vietnam.
The main strategy of the NVA (their orders) was to "bleed us dry". Meaning, cause so many casualties, that the people back in the United States will protest and protest and protest. Then the communists may lose on the battlefield in South Vietnam, but will win in the United States. Their strategy was effective. They ended up overtaking South Vietnam and reuniting the country.
Whereas most wars of the past operated on the doctrine of taking "ground"; Vietnam conducted it's war on the "body count" principle. Kill more of them, than they can of us. The tactic used to fulfull this strategy was, "search and destroy." Find him, then kill him; then add up the score.
Vietnam Vietnam
They had many strategies!