The
United States Army Corps of Engineers (
USACE) is a direct reporting unit and engineer formation of the United States Army that has three primary mission areas:
Engineer Regiment, military construction, and civil works. USACE has 37,000 civilian and military personnel, making it one of the world's largest public engineering, design, and construction management agencies. The USACE workforce is approximately 97% civilian, 3% active duty military. The civilian workforce is primarily located in the United States, Europe and in select Middle East office locations. Civilians do not function as active duty military and are not required to be in active war and combat zones, however volunteer opportunities do exist for civilians to do so.