The 877th Engineer Battalion is a unit of the United States Army, specializing in military engineering tasks. This battalion is part of the U.S. Army Corps of Engineers and provides capabilities for construction, demolition, bridge-building, and road repair, among other engineering functions. The 877th is primarily responsible for executing engineer operations in support of other forces, ensuring mobility, countering obstacles, and creating infrastructure during military operations. The battalion's activities can range from constructing temporary bridges to conducting demolitions of strategic targets, depending on the mission requirements.