A brigade is a large, organized group of people working together toward a common goal, usually under a unified command structure.

Originally, the word referred to military units of several thousand soldiers. A brigade typically consists of multiple battalions working together as one coordinated force. Generals assign brigades to different parts of a battlefield, knowing each brigade can handle complex operations on its own while still being part of a larger army.

The word expanded beyond the military to describe any organized group united by purpose. Fire brigades fight fires together, with each firefighter having a specific role but all working as one team. In the 1800s, before professional fire departments existed, towns formed volunteer fire brigades where neighbors organized themselves to respond to fires.

You might hear about a “bucket brigade” when people form a line to pass water buckets from person to person, each doing their small part to achieve something no single person could do alone. The key idea is organization: a brigade is a structured team where everyone understands their role and how it fits into the larger mission.

Sometimes people use brigade playfully, like calling a group of enthusiastic volunteers a “cleanup brigade” when they tackle a big project together.