Wikipedia:Summary style

World War II article in summary style
World War II

World War II ... was a global war that was underway by 1939 and ended in 1945 ....

Chronology

The start of the war is generally held to be 1 September 1939 ....

Background

World War I radically altered the political map, with the defeat of the Central Powers ....

Pre-war events
Italian invasion of Ethiopia (1935)

The Second Italo–Abyssinian War was a brief colonial war that began in October 1935 and ended in May 1936 ....

Spanish Civil War (1936–1939)

Germany and Italy lent support to the Nationalist insurrection led by general Francisco Franco in Spain ....

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