In the United States army, the Corps of Engineers, a corps of officers and enlisted men consisting of one band and three battalions of engineers commanded by a brigadier general, whose title is Chief of Engineers
It has charge of the construction of fortifications for land and seacoast defense, the improvement of rivers and harbors, the construction of lighthouses, etc
It consisted of assistant and passed assistant engineers, ranking with ensigns and lieutenants, chief engineers, ranking from lieutenant to captain, and engineer in chief, ranking with commodore and having charge of the Bureau of Steam Engineering