The imagery of a 'half-formed ghost' has a dual meaning. It could perhaps be a graphic depiction of a body ravaged by war. Alternatively, it is a more literal allusion to a developing, but still faint image. Not only does the noun 'ghost' have ominous and harrowing connotations, it is a metaphor for how the suffering never becomes real for the Western world, it remains faint, distant and supernatural.