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  Hitler invades poland
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  britain,france,and austria declare war on Germany
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  soviets invade poland
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  the Nazis invade Denmark and Norway
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  britain invades france
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  German and British air forces clashed in the skies over the united kingdom. http://www.history.com/topics/world-war-ii/battle-of-britain
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  germans bomb coventry,england.
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  yugoslavia overthrows the pro-axis government
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  hitler takes complete control of the german army
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  British General Bernard Montgomery takes command of eighth army in north africa
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  Italian troops on the river don in the ussr. defeated the soviets.
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  first america's bombing raid on germany http://www.history.com/this-day-in-history/americans-bomb-germans-for-first-time
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  the allies bomb Rome http://www.history.com/this-day-in-history/america-bombs-rome
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  british drop 3000 tons of bombs during an air raid on Hamburg,Germany https://en.wikipedia.org/wiki/Bombing_of_Hamburg_in_World_War_II
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  Mussolini is captured and hanged by italian partisans