[autodidakto]

As always, tvtropes already has the answer:

http://tvtropes.org/pmwiki/pmwiki.php/Main/HitlersTimeTravel...

See also:

http://tvtropes.org/pmwiki/pmwiki.php/Main/TimeTravelTropes

Warning:

http://tvtropes.org/pmwiki/pmwiki.php/Main/TVTropesWillRuinY...