From Longman Dictionary of Contemporary Englishfall into linefall into lineOBEYto obey someone or do what other people want you to do, especially when you do not want to do it at first Most countries have signed the treaty but some are reluctant to fall into line. → fall
Examples from the Corpus
fall into line• If you can persuade her, the others will soon fall into line.• If one rotates one of them a little, everything falls into line.• Mr Lamont will order the others to fall into line.• All the Republicans except Elton and Carson fell into line and voted yes.• The decision to fall into line was not made for ignoble reasons, but from financial necessity. 