The news of his death reached  his parents on 11 November, Armistice Day. The parents was very sad.  Sassoon was also sad. He published his all the poems. Many people moaned reading his poetry because he was so young to die and they knew many young men had died like him due to the war. His poems have been often mentioned as the greatest of Britain’s War poets so far. Wilfred Owen, we can know his dark but pure life though his poem.

In September 1915, Owen went back  to England and began his training with the 3/28th London Regiment, later known as the 2nd Artists Rifles Officers Training Corps. The reason that he (fight) fought was ‘to save the language of Keats and Shakespeare’. Because Owen developed a fear that his language, English, would be destroyed by Germans because of successive German victor(y)ies. When he was training in London, he befriended a British poet, Harold Munro, who loved Owen’s poetry and helped him to (write poetry well) improve his poetry. After (he) staying there for 8 months, he moved to The 5th Battalion of the Manchester Regiment. There, he designed a gas mask that was better than the former one. 

After finishing his training, he moved to Etaples, France on December 30th. There, he met a man, (he) who was so violent, but everyone respected him because he had (a art with most infinity weapons??).=he was a good sniper with many weapons. When Owen (did battle at first) first did battle, he was struck by a life changing dilemma. There, he and his men stayed in a flooded dugout near Serre Number 2 Cemetery for 50 hours fighting against German artillery.Later, the training in Etaples was a piece of cake to him.  

 Owen had a narrow escape from death. However, his (man)friend/colleage , who was a sentry, was killed by a German soldier. And after he (coming) came back , he wrote a (poetry)poem “ The Sentry” mourning the man. In May, he was hit by a shell explosion at Savy Bank. (Though his life fortunately was saved) Fortunately his life was saved, but his best friend, Cock Robin, who was on the same spot, died. After that, his colleagues found that Owen acted strangely (before) after (t)he lost his friend, and he was diagnosed with shell shock. After being diagnosed with shell shock, he was sent to Craiglockhart War Hospital near Edinburgh under the supervision of Dr.A J Brock. 

Actually, at that time, many psychiatr(y)ic hospitals used electric shock therapy. But Dr. Brock didn't use it. He believed that occupational therapy was better than electric (one)therapy. So, he applied the therapy to treat Owen (with) for shell shock. First of all, he just observed Owen. While observing him, he found his (man)patient wrote poetry. After he (knew) discovered that, he read Owen's work and encouraged him to continue writing poetry and continue (t)his stay(ing) in the hospital. And he also made Owen edit(al)or of the hospital's own magazine, "The Hydra”. 

While he was stay(ed)ing in the hospital, he also met Siegfried Sassoon, as well as Dr. Brock. Sassoon , who was already famous for a poem at that time, read Owen's poetry and loved (him as a poetry while)it. So he also encouraged him to continue with it. Owen also read Sassoon's poetry. They  enjoyed discussing Owen's poetry. 

At this time, Owen convalesced (from) by  talking about his work with Sassoon and writing many poe(try)ms. ''Anthem for Doomed Youth' (is)was typical (as) of the things he wrote at this time. Actually, when he had written ‘Anthem for Doomed Youth’, the poetry was named ‘Anthem to Dead Youth’ by Owen. But Sassoon didn’t like the name so the name was changed to ‘Anthem for Doomed Youth’. Owen also made many friends who were all (the) male poe(ms)ts. On the other hand, he didn't befriend any women, such as Jessie Pope, who was an English poet, writer and journalist and also famous her poetry published during World War 1.

In the spring of 1918, Owen published a collection of poems he had written.The introduction starts “ This book is not about heroes. My subject is war and pity of war; The poetry is in the pity.” When it was published, it was immediately well received by critics and many readers, and is still well received even today.(until now.) Because Owen’s poetry was the obvious, and clear truth. 

In June 1918, Owen came back to his regiment and in August, he was sent to France. At this time, the war had gone into its (last) final stages.  (And)He was awarded the Military Cross for bravery near a church( was he brave near a church or was the ceremony near a church?). (In)At the award ceremony, he said;

“For conspicuous gallantry and devotion to duty in the attack on the Fonsomme Line on 1st/2nd October 1918. On the company commander becoming a casualty, he assumed command and showed fine leadership and resisted a heavy counter-attack. He personally manipulated a captured enemy machine gun in an isolated position and inflicted considerable losses on the enemy. Throughout he behaved most gallantly.” 

In November 4, 1918, he was killed in battle while leading his soldiers as a commissioned officer. He and his men had to cross Sambre-Oise canal near the French town of Ors, to attack  the Germans who held the opposite bank . However, while he was on a raft, he died due to (the) German artillery fire. 

The news of his death reached  his parents on 11 November, Armistice Day. (The)His parents was very sad.  Sassoon was also sad. He published his all (the)Owen's poems. Many people moaned while reading his poetry, because he (was so young to die) died so young, and they knew many young men had died like him due to the war. His poems have (been) often been mentioned as the greatest of Britain’s War poe(ts)ms so far. Wilfred Owen, we can (know) learn about/understand his dark, but pure life, though his poems.

 Please read my notes, and rewrite.

Thank you.

(a art with most infinity weapons??) please rewrite, I don't understand the meaning.

Poetry = The subject of poems. (uncountable noun. You cannot say "a poetry")

A poem = the piece of writing. (countable noun. 1 poem, 2 poems, etc...,)

A poet = A person (man or woman) who writes poetry.

You are using these words incorrectly.(Poet, poem, poetry)

You need to tell the readers who Jessie Pope was. (We don't know who she was).