Meanings of manchurian campaign in English

They had learned war in the bitter school of the Manchurian campaign.

What the Manchurian campaign cost England can be figured out exactly, to the pound and shilling.

The Japanese, after the Manchurian campaign, which they had done everything possible to avoid, contrived wholly to eliminate Russian aggression from the Far East.

Since the disastrous war with Japan the Russian army has been reorganized and it has profited largely by the harsh experience of the Manchurian campaign.