Universal Soldier
Song written and composed by Buffy Sainte-Marie, originally recorded by The Highwaymen released in 1963

Here is the Glen Campbell version:

https://invidious.fdn.fr/watch?v=fyhXwpitGYY

Here the version by the writer itself, Buffy:

https://invidious.fdn.fr/watch?v=7zNUnwUSZmQ