Here we see a person in a bowler hat with his face hidden by a large apple. Why this painting refers to war, is not obvious. Perhaps the apple hides something and there is a tension between what we see and what is hidden.
"My painting is visible images which conceal nothing; they evoke mystery and, indeed, when one sees one of my pictures, one asks oneself this simple question "What does that mean? It does not mean anything, because mystery means nothing either, it is unknowable." (Rene Magritte)