Road Warrior
Seeking the middle path..
It was Alexander Haig, Chief of Staff who heard him say it. The US was at war with Vietnam at the time.
It doesn't read well, it would be interesting to see if Kissinger ever defended the comments.
The actual quote, “Military men are just dumb stupid animals to be used as pawns in foreign policy" is in “The Final Days” by Bob Woodward and Carl Bernstein in chapter 14. Page 194 in the paperback version (1995).
I can't find the context or if Kissinger ever confirmed or denied making the comment.