The cartoon below sums up the relationship between the First World War and the Holocaust. The cartoonist David Lowe shows dead soldiers being shoveled into a furnace (the soldiers are already dead). Hitler and the Nazis shoveled Jews into a furnace (they too already were dead).

Dead Jews being shoved into an oven (and cremated) represented dead soldiers being shoved into an oven (and cremated). The symbolism is precise.

By creating the Holocaust, Hitler and the Nazis revealed the profound pathology or psychopathology of warfare.