Which of the following is a functional brigade?

• A. Aviation brigade
• B. Fires brigade
• C. Engineer brigade
• D. Military intelligence

Answer: (D)

A functional brigade is built around a capability that serves the entire force across missions, not tied to a single platform. The military intelligence brigade is organized specifically to provide intelligence support—collection, analysis, and dissemination—across operations for the whole command. This cross-cutting enablement helps inform decisions at multiple levels, making it a true functional brigade.

The other options are organized around a platform or a specialized trade. An aviation brigade centers on air assets and airpower; a fires brigade centers on delivering artillery effects; an engineer brigade focuses on combat engineering tasks. While all are important capabilities, they are typically described as platform- or trade-oriented formations rather than cross-service, function-driven brigades.