The brigade appears in poetry as an emblem of organized collective sacrifice, most famously in Alfred, Lord Tennyson's "The Charge of the Light Brigade," which commemorates a doomed cavalry charge during the Crimean War. The term captures both the disciplined grandeur of massed military formations and the tragic waste of life when such units are sacrificed through flawed strategy, making it a lasting symbol of heroism entangled with futility.

A brigade is a military formation typically composed of several battalions, forming a significant tactical unit. Historically, a brigade was commanded by a brigadier general and could include infantry, artillery, cavalry, and support elements. In modern armies, brigades have become the principal deployable combined arms unit, capable of sustained independent operations. A brigade is larger than a regiment but smaller than a division, striking a balance between mass and mobility. In military poetry, the brigade often represents the level at which soldiers become more than individuals—a formation with its own identity and pride. The term also appears in historical contexts, such as the "Light Brigade" of Crimean War fame, immortalized in Tennyson's poem. Related terms include battalion, division, and task force.