YOU COULDN’T REALLY SEE CORPSES, BUT YOU KNEW WHERE THEY WERE.
“In reality this wasn't much more than a miserable boyau(Trench) dug, in one night, by troops who were hanging on there and who, the next day, were pulverized by howitzer fire.
There, human flesh had been shredded, torn to bits. At places where the earth was soaked with blood, swarms of flies swirled and eddied. You couldn't really see corpses, but you knew where they were, hidden in shell holes with a layer of dirt on top of them, from the wafting smells of rotten flesh.”
Corporal Louis Barthas - Battle of Verdun.