When I saw this thread I thought, "Looks interesting! Funny, I haven't seen this before!" Then I found a post from me some 4 years ago! I used to have a memory!
Still stand by the two songs I mentioned for the same reasons:

Pete Seeger Lyrics
Bring 'Em Home Lyrics
If you love your Uncle Sam, Bring them home, bring them home.
Support our boys in Vietnam, Bring them home, bring them home.

It'll make our generals sad, I know, Bring them home, bring them home.
They want to tangle with the foe, Bring them home, bring them home.

They want to test their weaponry, Bring them home, bring them home.
But here is their big fallacy, Bring them home, bring them home.

I may be right, I may be wrong, Bring them home, bring them home.
But I got a right to sing this song, Bring them home, bring them home.

There's one thing I must confess, Bring them home, bring them home.
I'm not really a pacifist, Bring them home, bring them home.

If an army invaded this land of mine, Bring them home, bring them home.
You'd find me out on the firing line, Bring them home, bring them home.

Even if they brought their planes to bomb, Bring them home, bring them home.
Even if they brought helicopters and napalm, Bring them home, bring them home.

Show those generals their fallacy: Bring them home, bring them home.
They don't have the right weaponry, Bring them home, bring them home.

For defense you need common sense, Bring them home, bring them home.
They don't have the right armaments, Bring them home, bring them home.

The world needs teachers, books and schools, Bring them home, bring them home.
And learning a few universal rules, Bring them home, bring them home.

So if you love your Uncle Sam, Bring them home, bring them home.
Support our boys in Vietnam, Bring them home, bring them home.

And:
From Ed McCurdy
Last night I had the strangest dream
I ever dreamed before
I dreamed the world had all agreed
To put an end to war
I dreamed I saw a mighty room
The room was filled with men
And the paper they were signing said
They'd never fight again

And when the papers all were signed
And a million copies made
They all joined hands and bowed their heads
And grateful prayers were prayed
And the people in the streets below
Were dancing round and round
And guns and swords and uniforms
Were scattered on the ground

Last night I had the strangest dream
I ever dreamed before
I dreamed the world had all agreed
To put an end to war

Eddie