American Marine General Smedley Butler lived through combat in WWI and spent the rest of his life working to keep the world's nations out of additional wars, especially wars designed to profit the military-industrial complex. He died under mysterious circumstances just prior to WWII.

BUTLER'S 1935 AMENDMENT FOR PEACE

I PROPOSE an Amendment for Peace, to the Constitution of the United States:
1. The removal of members of the land armed forces from within the continental limits of the United States and the Panama Canal Zone for any cause whatsoever is prohibited.
2. The vessels of the United States Navy, or of the other branches of the armed service, are hereby prohibited from steaming, for any reason whatsoever except on an errand of mercy, more than five hundred miles from our coast.
3. Aircraft of the Army, Navy and Marine Corps is hereby prohibited from flying, for any reason whatsoever, more than seven hundred and fifty miles beyond the coast of the United States. Such an amendment would be absolute guarantee to the women of America that their loved ones never would be sent overseas to be needlessly shot down in European or Asiatic or African wars that are no concern of our people.

SUCH an amendment, linked with adequate naval and military defenses at
home, would guarantee everlasting peace to our nation.