That depends entirely on who "he" is.
1933
Thru management by chaos
1890, Kaiser Wilhelm II become ruler of Germany-forced Bismarck to resign.
Hitler was the ruler of Germany Hope this answers your question :)
germany's term limits
He was elected for chancellor and when the president died Hitler siezed the opertunity and merged Chancellor and president into one.
Adolph Hitler was chancellor and then dictator of Germany. He never assumed power in the United Kingdom.
Zeus didn't become its ruler, that would be Hades
Adolf Hitler was the ruler of Germany from 1933 until the beginning fo WW2.
Ever heard of "Hitler''??
From 1933-1945, he was.
He became ruler in the year 1456