mobiliser

Mobiliser is the British English spelling of the verb mobilize, meaning to assemble people or resources for action or to prepare an organization for operation. It can refer to activating a system, coordinating activities, or making resources ready for use. Etymology traces the term to the French mobiliser and the Latin mobilis meaning movable.

In military usage, to mobilize is to assemble and prepare troops, equipment, and logistics for deployment or training. In political and social contexts, mobilising refers to organizing and activating supporters, volunteers, or financing for a campaign or cause. In emergency management, authorities mobilise responders and materiel to respond to disasters or crises. In business and logistics, firms mobilise assets, supply chains, and operations to meet demand or implement plans.

Spelling and variants: The verb is mobilize in American English and mobilise in British English; the noun forms are mobilisation (British) and mobilization (American).

Usage notes: The term implies rapid or comprehensive activation and is commonly followed by objects such as troops, resources, volunteers, or support. While it often appears in formal or official contexts—military, government, or organizational planning—it is also used in everyday language to describe rallying people or resources for a task or response.