Siegfried Sassoon (1886–1967) was an English poet, author and soldier. Decorated for bravery on the Western Front, he became one of the leading poets of the First World War. His poetry both described the horrors of the trenches, and satirised the patriotic pretensions of those who, in Sassoon's view, were responsible for a vainglorious war..
Percy Bysshe Shelley (1792–1822) was one of the major English Romantic poets and is critically regarded as among the finest lyric poets in the English language. Considered too radical in his poetry and his political and social views to achieve fame during his lifetime, recognition of his significance grew steadily following his death.
La bomba atómica fue desarrollada por Estados Unidos durante la Segunda Guerra Mundial gracias al Proyecto Manhattan, y es el único país que ha hecho uso de ella en combate (en 1945, contra las ciudades japonesas de Hiroshima y Nagasaki).