The 117th Engineer Brigade is a military unit within the United States Army responsible for providing engineer support to theater-level commands. The brigade is composed of various specialized units, including combat engineers, bridge engineers, and topographic engineers, among others. Their primary roles involve constructing, maintaining, and repairing roads, bridges, airfields, and other military facilities, as well as conducting mine clearance and map production. The 117th Engineer Brigade is a vital component of the U.S. Army's engineering capabilities during both peacetime and war-time operations.