The edition examines the manuscripts, history and significant variants of Le Cr`eve-Coeur and of `La Rime en 1940'. Aragon's claim that the collection has its origins in World War 1 is considered, but little evidence for this is found. A more likely catalyst is the colonial war in Morocco of 1925-26 that led to Aragon's conversion to Communism. It is in the 1930s that the poet develops his strategy of poetry as a `contrebande' against war. The principal influences on Aragon in this undertaking are evoked. A survey is given of the political and historical circumstances of Le Cr`eve-Coeur, and they are shown to be indivisible from the poetry. The main themes of the collection are considered and the degree to which the `contrebande' technique affects their accessibility. A detailed discussion of `La Rime en 1940' and of each poem, stanza by stanza, follows.