855th Engineer Battalion

The 855th Engineer Battalion is a unit of the United States Army Reserve, established in 1949 and headquartered in Phoenix, Arizona. Throughout its history, the battalion has provided essential combat engineering support, including construction, demolition, and mobility operations. Its soldiers have deployed in support of major operations such as Operation Iraqi Freedom and Operation Enduring Freedom, conducting critical infrastructure projects and route clearance missions. The 855th Engineer Battalion continues to maintain readiness for both domestic support and overseas contingency operations, upholding its motto, "Build to Serve."