Final answer:
Siegfried Sassoon perceives war as horrific and futile, not heroic. He believes soldiers are mistreated by those in power.
Step-by-step explanation:
In his poetry, Siegfried Sassoon perceives war as a horrific and futile endeavor, rather than heroic. He uses vivid and graphic imagery to convey the brutal reality of war, highlighting the physical and mental trauma soldiers endure. Sassoon believes soldiers are mistreated by the people in power who send them to war, as they are seen as expendable pawns rather than individuals with lives and emotions.