
The 412th Theater Engineer Command is a United States Army Reserve unit that conducts theater-level engineer operations for Eighth U.S. Army, Korea; U.S. Army Europe; and U.S. Army Pacific, supports continental U.S. – based engineer requirements as directed, and is prepared to participate in Joint and Combined regional contingency operations.

The 416th Theater Engineer Command is a United States Army Reserve unit that conducts theater-level engineer operations for US Army Central Command, US Army Southern Command, supports continental U.S. – based engineer requirements as directed, and is prepared to participate in Joint and Combined regional contingency operations. It is also the higher command headquarters for the US Army Facility Engineer Group.

The 549th Engineers Light Ponton Company was a combat engineer company of the United States Army during World War II. Operationally attached to the 1150th Engineer Combat Group, it served under XXI Corps of the Seventh Army in action in France and Germany in 1944 and 1945.

The 911th Technical Rescue Engineer Company, formerly the MDW Engineer Company, is a unit of the United States Army that specialises in technical rescue, particularly urban search and rescue (USAR). It is the only technical rescue company in the United States Department of Defense. The 911th Technical Rescue Engineer Company is stationed at Fort Belvoir, Virginia.

The United States Army Corps of Engineers (USACE) is an engineer formation of the United States Army that has three primary mission areas: engineer regiment, military construction, and civil works. The day-to-day activities of the three mission areas are administered by a lieutenant general known as the commanding general/chief of engineers. The chief of engineers commands the engineer regiment, composed of combat engineer army units, and answers directly to the chief of staff of the army. Combat engineers come from throughout the service and can be active duty, national guard, or army reserve. Combat engineers duties are to construct fighting positions, fixed/floating bridges, and obstacles and defensive positions, place and detonate explosives (sappers), conduct operations that include route clearance of obstacles and rivers, prepare and install firing systems for demolition and explosives, and detect mines. For the military construction mission the commanding general is directed and supervised by the assistant secretary of the army for installations, environment, and energy, whom the President appoints and the Senate confirms. Military construction relates to construction on military bases and worldwide installations.

An Engineer Light Ponton Company was a combat engineer company of the United States Army that served with U.S. Army ground forces during World War II. It was primarily a highly mobile pontoon bridge construction unit, though it also provided both M2 assault boats and a selection of infantry support bridging, ferries, and rafts.

The 868th Engineer Company "Suwannee Rifles" is a unit of the Florida Army National Guard, stationed in Live Oak, Florida. The company has one of the oldest continuous lineages in the Florida National Guard, starting out as an independent company of infantry in 1884. During its first 71 years, the Suwannee Rifles served as an infantry company and deployed as Company E, 124th Infantry during World War II. After WWII the unit reorganized again as infantry, then as an armor company for thirteen years, and since December 1968 the Suwannee Rifles has been an engineer company.
