Back in the early days, besides singing about hard times and love, bluesmen also sang about the tragedy of war. Indeed, the big boom was the 'post-war blues' of Chicago, but besides WW2 there was the Vietnam War as well.
I compiled 7 songs about war for you, please enjoy! (the blues, not war)
1- Lightnin' Hopkins - War News Blues
2- J.B. Lenior - Vietnam
3- John Lee Hooker - War is Over
4- Junior Wells - Vietcong Blues
5- Muddy Waters - Herbert Harper's Free Press News
6- Big Joe Williams - Army Man in Vietnam
7- Big Amos Patton - Going to Vietnam Blues