Yes, Roundup  is  a milder version of the herbicide, Agent Orange that was used in the Vietnam War.
The Vietnamese are still trying to get the US to pay for all the terrible birth defects and illnesses
linked to Agent Orange.   Agent Orange was in fact developed and tested here in Hawaii and UH
researchers were instrumental in its development.  UH  at the time was a big recipient of defense
contracts and  the place at the time was lousy with FBI, CIA, Army, and Navy intelligence agents spying on UH facility and the anti war and commie protest groups who were very active on campus
and in the community.