How is “march on” used?

In The Great Dictator (1940), one line is: “that we are at last ready to march on Osterlich.”

Which movie is “march on” from?

The clip at the top of this page is from The Great Dictator (1940).

to march to a place to protest about sth or to attack it

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to march to a place to protest about sth or to attack it
that we are at last ready to march on Osterlich.

Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición

that we are at last ready to march on Osterlich.

En 8 películas · n.º 1