How does Louis-Ferdinand Celine use imagery in Journey to the End of the Night?

Celine's depiction of how men in World War I were brutally and senselessly slaughtered is an accurate one and Celine depicts it with various metaphors (comparing men to butchered animals on the field, or tin soldiers to be shot at for fun) as well as literal descriptions (the blood gurgling in a decapitated man's neck stump is a grotesque recurrent image).