Know the drill

Meaning

Be familiar with the routine procedure.

Usage

Used when people understand what to do next.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Originally military, referring to drilling practice.

Used since the 1800s in soldier training and later in business.