Your Mission is to Work Safely! -and we want to assist you in getting there. The U.S. Army Corps of Engineers is made up of the Headquarters, 9 Major Subordinate Commands, 45 Districts and 12 Center/Labs. The type of work accomplished by each Corps entity is mission-dependent. Some are heavily involved in Civil Works missions (locks, dams, lakes, recreation etc.), some have Military Programs missions (barracks, hospitals, other military construction, etc), and some have a combination of both. Regardless of the type of work you are performing for the Corps, the goal is to have that work performed safely.