Let’s continue the Songbook of Days thing. Some obvious choices here, I guess.
Capercaillie – Lament for William Chisholm
The Kinks – Some Mother’s Son
Belle and Sebastian – I Fought in a War
Leonard Cohen – The Partisan
PJ Harvey – All and Everyone
Владимир Высоцкий – Песня о земле
Dire Straits – Brothers in Arms
Talking Heads – Life During Wartime
Егор Летов – Отряд не заметил потери бойца
БГ – То, что я должен сказать
The Clash – The Call Up
Suggestions?
Rated Zed 
Rise Against – Hero of War
Odetta’s cover of Masters of War is also really good for people who like things to be explained very clearly.