fall into line
to obey someone or do what other people want you to do, especially when you do not want to do it at first

[TahlilGaran] Dictionary of Contemporary English ▲

fall into line
fall in/into line
to start to accept the rules of a company or other organization.
Employees were expected to fall into line with the company's new practices or face dismissal.
(often + with)
to do something similar.
Once we bring out a CD-ROM version, all our competitors will fall into line.

If students see that everyone else in school is wearing a uniform, they tend to fall in line and wear one, too.

[TahlilGaran] English Idioms Dictionary ▲

fall into line
1. to conform to a certain course of action
The players fell into line after the coach became more strict during practice.

2. to stand properly in a row (like soldiers)
The soldiers fell into line as they waited for the inspection.

[TahlilGaran] English Idioms Dictionary ▲

fall into line
See: IN LINE, INTO LINE.

[TahlilGaran] English Idioms Dictionary ▲