on the march en · ADP
Meanings
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moving; advancing; progressing
Throughout October the campaign in Korea made excellent progress. Pyongyang, the North Korean capital, was taken on October 19, and day after day MacArthur's forces were on the march.
1956, Harry S. Truman, chapter 24, in Memoirs of Harry S. Truman: Years of Trial And Hope, volume II, Doubleday & Company, →OCLC, page 371: