Pros and cons of the Vietnam war?

Answer 1

Pro-Pioneered and validated modern jet warfare; e.g. Ground Defense Systems (AAA sites, Radar, and SAMs); and super-sonic aerial (jet) combat. Last time in history that a heavy bomber's tail gunner shot down an enemy jet in aerial combat (B52 tail gunners shot down two NVAF MiG21s).

Establishment of dog-fighting schools for US jet fighter pilots (USNs Top Gun School and the USAFs Red Flag). Today all US jets have guns on them, thanks to lessons learned from the Vietnam War.

Con-Enemy won the war.

Answer 2

Many lives were lost for a pointless war that achieved nothing. It downgraded America's standing in the world at the time.