<P> The second half of this poem, has the narrator reminded by seeing the soldier who didn't get his helmet on fast enough to offer some dark and harsh advice to readers about how quick and impartial thinking can get you thinking irrationally and can and will ultimately get you killed . It includes a broken sonnet, this sonnet form along with the irregularity give the feeling of other worldliness and a sense of being foreign when read . Studying the two parts of the poem also reveals a change in the use of language from visual impressions outside the body, to sounds produced by the body - or a movement from the visual to the visceral . In the opening lines, the scene is set with visual phrases like' haunting flares' but after the gas attack, Owen uses sounds produced by the victim -' guttering',' choking',' gargling' . In this way, Owen mirrors the terrible nature of phosgene, which corrodes the body from inside . </P> <P> In May 1917 Owen was diagnosed with neurasthenia (shell - shock) and sent to Craiglockhart hospital near Edinburgh to recover . Whilst receiving treatment at the hospital, Owen became the editor of the hospital magazine, The Hydra, and met the poet Siegfried Sassoon, who was to have a major impact upon his life and work and to play a crucial role in the dissemination of Owen's poetry following his untimely death in 1918, aged only 25 . Owen wrote a number of his most famous poems at Craiglockhart, including several drafts of both' Dulce et Decorum est',' Soldier's Dream' and' Anthem for Doomed Youth' . Sassoon advised and encouraged Owen, and this is evident in a number of drafts which include Sassoon's annotations . </P> <P> Only five of Owen's poems were published throughout his lifetime . However, after his death his heavily worked manuscript drafts were brought together and published in two different editions by Siegfried Sassoon with the assistance of Edith Sitwell (in 1920) and Edmund Blunden (in 1931). </P>

Who is the poem dulce et decorum est aimed at