Besides being cold and hungry, the men were also sleep-deprived - so, of the four components we might say encapsulate the essence of war, fear was the only thing missing.
So, a study of war by a former squad leader in the Continuation War (the one that is somewhat parallel to World War 2, in which Finland, during Barbarossa, went into the USSR to get back the land it lost in the Winter War, one year prior).
Väinö Linna kept notes of what he saw, and I'm guessing this is the humanity he needed pushed down during the war that he reclaimed when he wrote Tuntematon Sotilas in 1954.
Riitaoja was still lying in his ditch, face pressed to the ground. He was like a terrified child. Lucky for him, ambition did not figure amongst his concerns. Neither did any conception of 'homeland, so he was at liberty to be just as terrified as he liked.
At first, it looks like a snarky narrator, but it’s actually the absurdity of war coming through the lines.
