fall into step

She caught on fast and fell into step behind him.

She began walking; the men fell into step on either side of her.

He changed the subject as the two men fell into step with her.

As he walked to the doors, they fell into step on either side of him.

She hadn't gone far before another man fell into step with her.

Then she pointed toward the east, and the rest of the group fell into step behind her.

His friends fell into step on either side of him.

Instead he fell into step, and they went on from there.

As we fall into step together, I tell her she has me a bit confused.

He turned away, but I followed, falling into step with him.