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).

that we are at last ready to march on Osterlich.

8 作品で登場 · 1 本目

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

11 本の映画に登場

オックスフォード映画の 100%
to march to a place to protest about sth or to attack it
Then we gather our full strength and march on the black gate.
that we are at last ready to march on Osterlich.

定義：Oxford Advanced Learner's Dictionary 第 9 版