My mom used to sing this with me when I was younger, she taught me the harmony. I have no idea of the artist, and I don't think she does either, but I've known the lyrics by heart for as long as I can remember

No tears for Johnny
People don't you cry
no tears for Johnny
Just because he's gonna die
He's gonna be a hero from now until the end of time
So shed no tears for Johnny boy
Marchin' in a thin red line

When the drums begin to roll
Bugles start to blow
Johnny must not reason why
He knows he's got to go
Fight for power and glory
Johnny go to war
And if one hundred boys should die
We can send in a hundred more

No tears for Johnny
People don't you cry
No tears for Johnny
Just because he's gonna die
A lesson for the world to learn
Is one that we all ignore.
So Johnny keep on marchin' till
You forget what you're marchin' for.