
The 1st Engineer Battalion is a unit of the United States Army with a record of accomplishment in both peace and war; an organization that provides sustained engineer support across the full spectrum of military operations. The 1st Engineer Battalion is the oldest and most decorated engineer battalion in the US Army, tracing its lineage to the original Company of Sappers and Miners organized at West Point, New York in 1846.

The 2nd Engineer Battalion is an engineering battalion in the United States Army which can trace its lineage back to 1861.

The 3rd Engineer Battalion is a unit of the United States Army that deploys to designated contingency areas and conducts combat and/or stability operations in support of a brigade combat team. It is a divisional mechanized combat engineer unit composed of two combat engineer companies, one signal, one military intelligence, and a headquarters company. Its mission is to provide assured mobility, counter-mobility, general engineering, survivability support, military intelligence, and connectivity support to deploy anywhere at any time. The unit's history spans 1901 to present day.

The 4th Engineer Battalion is an engineer battalion of the United States Army. It is made up of combat engineers. The unit saw action in the American Civil War, World War I, World War II, Vietnam War, and the Global War on Terrorism, to include Operation Iraqi Freedom and Operation Enduring Freedom.

The 7th Engineer Battalion is a unit of the United States Army located at Fort Drum, New York. This battalion falls under the 10th Mountain Division's 1st Brigade Combat Team.

The 8th Engineer Battalion is a brigade engineer battalion (BEB) of the United States Army, which traces its history back to 1916. The battalion is based at Fort Hood, Texas, as part of the 2nd Brigade Combat Team of the 1st Cavalry Division.

The 12th Engineer Battalion was activated 1 July 1940, at Ft. Jackson, South Carolina as an organic element of the 8th Infantry Division In July 1944 the battalion deployed to the European Theatre, landing at Omaha Beach in support of the greatest landing operation in history. Subsequently, the Battalion participated in campaigns in Normandy, Northern France, Rhineland, and Central Europe, and Luxembourg

The 14th Brigade Engineer Battalion is a Combat Engineer Battalion of the United States Army based at Joint Base Lewis-McChord, Washington. The battalion is a subordinate unit of the 2nd Stryker Brigade, 2nd Infantry Division, and I Corps. The battalion's official motto is "Gong Mu Ro" and battle cry "Rugged!".

The 16th Engineer Battalion is a Combat Engineer Battalion in the United States Army, first established in 1935

17th Armored Engineer Battalion are part of the 2nd Armored Division "Hell on Wheels". During World War II, they were active in North African Campaign, and Western Europe Campaign. 17th Armored Engineer Battalion was founded on 1 October 1933 as part of the USS Army. First called 17th Engineer Battalion, Motorized. It was renamed on 10 July 1940 to 17th Engineer Battalion (Armored) and assigned to the 2d Armored Division. The unit became active and started training 15 July 1940 at Fort Benning, Georgia. Renamed again on 8 January 1942 as the 17th Armored Engineer Battalion. The Battalion is now based at Fort Hood, Texas. Battalion motto is We pave the way. Task of the 17 include construction and demolition tasks under combat conditions, like constructing and breaching trenches, tank traps and other fortifications, bunker construction, bridge and road construction. Along with building destruction bridges and other physical work in the battlefield are needed. They also lay or clear land mines. The 17th facilitates the movement and support of friendly forces while slowing the enemy's forces.

The 27th Engineer Battalion (COMBAT)(AIRBORNE) and its subordinate companies have often used the Fort Bragg/XVIII Airborne Corps standard of "Airborne!" for its motto.

Known during World War II as the 31st Engineer Combat Battalion

The 37th Engineer Battalion is an airborne engineer battalion in the United States Army, and currently subordinate to the 2d Brigade Combat Team, 82d Airborne Division, based at Fort Bragg, North Carolina. The 37th Engineer Battalion was reactivated in the 82d Airborne Division as part of the United States Army new BCT 2020 concept in which each BCT's Special Troops Battalions would be inactivated and reactivated as Brigade Engineer Battalions. Prior to this, the battalion was a subordinate unit of the 20th Engineer Brigade assigned to XVIII Airborne Corps.

The 2nd Infantry Division is a formation of the United States Army. Its current primary mission is the pre-emptive defense of South Korea in the event of an invasion from North Korea. There are approximately 17,000 soldiers in the 2nd Infantry Division, with 10,000 of them stationed in South Korea, accounting for about 35% of the United States Forces Korea personnel.

The 92nd Engineer Battalion is a unit of the United States Army with a record of accomplishment in both peace and war; an organization that provides sustained engineer support across the full spectrum of military operations.

The 96th Engineer Battalion was a military engineer unit in the United States Army. The battalion, which was composed mainly of African-American troops, served during World War II and was also known as the 96th Engineer General Service Regiment.

The 101st Engineer Battalion is a unit of the Massachusetts Army National Guard and one of the oldest serving units of the United States Army. It is one of several National Guard units with colonial roots and campaign credit for the War of 1812. The 101st Engineer Battalion was originally established as the East Regiment. As the first muster was held on the green in Salem, Massachusetts, Salem is seen as the birthplace of the National Guard.

The 113th Engineer Battalion is an "Echelons Above Brigade" (EAB) Army Engineer Battalion of the Indiana National Guard, currently attached to the 219th Engineer Brigade, 81st Troop Command. Their missions include construction and combat effects in support of higher operational Army echelons. Units of the 113th are found in Gary, Valparaiso, Franklin, and Edinburgh/Camp Atterbury, Indiana.

The 114th Engineer Battalion was an engineer battalion of the United States Army. During World War II, the battalion was attached to the 32nd Infantry Division to replace the 107th Engineer Combat Battalion, which was bound for Ireland. They fought at Papua, New Guinea.

The 130th Engineer Battalion is a combat engineer battalion of the Puerto Rico Army National Guard allocated to the 101st Troop Command. The 130th is one of the most decorated battalions of the Puerto Rico National Guard with two Presidential Unit Citations, one Meritorious Unit Commendation, thirty five Purple Hearts, one Silver Star Medal, twenty six Bronze Star Medals, and four hundred and sixty nine Army Commendation Medals.

The 133rd Engineer Battalion is a component of the Maine Army National Guard and the United States Army. The organization is the oldest in the Maine Guard and is one of the largest organizations in the state. The battalion has responded to natural disasters at home as well as military actions overseas. The current battalion has the capacity to execute a variety of Army Engineer missions, from horizontal construction, vertical construction, combat engineer missions, and surveying. The battalion has two horizontal companies, one vertical company, one combat engineer company, a forward support company, a survey and design detachment, and a headquarters company.

The 204th Engineer Battalion was constituted on 1 December 1967 in the New York Army National Guard. This battalion was organized on 1 February 1967 from existing units in south-central New York. The headquarters of the unit was established in Binghamton, New York.

The 205th Engineer Battalion is an engineer battalion of the Louisiana Army National Guard. It is part of one of the 225th Engineer Brigade, one of largest engineer brigades in the United States Army National Guard. The 205th Engineer Battalion is headquartered in Bogalusa, LA in Washington Parish with the remaining companies and detachments located in St. Tammany, Tangipahoa, Ascension, and Jefferson parishes. The battalion provides command and control to plan integrate, and direct execution of three to five assigned engineer companies and one Forward Support Company (FSC) to provide mobility in support application or focused logistics.

The 168th Engineer Brigade is a Combat Engineer brigade of the United States Army based in Vicksburg, Mississippi. It is a part of the Mississippi Army National Guard.

The 229th Brigade Engineer Battalion is an Engineer Battalion in the Virginia Army National Guard, part of the 29th Infantry Division's 116th Infantry Brigade Combat Team. First formed under the designation in 1985, it became the 116th Brigade Special Troops Battalion in 2005. It was renamed the 229th Brigade Engineer Battalion once again in 2016.

The 249th Engineer Battalion is a versatile power generation battalion assigned to the U.S. Army Corps of Engineers that provides commercial-level power to military units and federal relief organizations during full-spectrum operations. Additionally, the commander serves as the Commandant of the U.S. Army Prime Power School, the institution responsible for the development of Army and Navy power generation specialists.

The 276th Engineer Battalion is an engineer battalion of the Virginia Army National Guard. It is one of several Army National Guard units with campaign credit for the War of 1812.

The 289th Engineer Combat Battalion was a combat engineer battalion of the United States Army during World War II. It served under XXI Corps of the Seventh Army in action mainly in France and Germany in 1944 and 1945. It received campaign credit for participation in the Ardennes-Alsace campaign , Rhineland campaign, and the Invasion of Germany.

The 291st Engineer Combat Battalion was one of the most decorated engineer combat battalions of the United States Army during World War II, playing notable roles both in the Battle of Bulge and the Rhine crossing at Remagen.

The 321st Engineer Battalion is an Army Reserve battalion with active service in World War II and Operation Iraqi Freedom.

The 326th Engineer Battalion is one of three air assault engineer battalions in the United States Army. The 326th is part of the 1st Infantry Brigade Combat Team ("Bastogne")(♣), 101st Airborne Division and has been a part of the 101st since World War I.

The 397th Engineer Battalion is a multi-role engineer battalion of the United States Army based in Marina, Califormia. Activated 18 May 1959 at Eau Claire, the battalion traces its lineage back to World War II. It is a United States Army Reserve formation and is subordinate to the 301st Engineer Brigade at Joint Base Lewis McCord WA.

The 528th Engineer Battalion is an engineer battalion of the Louisiana Army National Guard. It is part of one of the 225th Engineer Brigade, one of largest engineer brigades in the United States Army National Guard. The 528th Engineer Battalion is headquartered in Monroe, LA in Ouachita Parish with the remaining companies and detachments located in Franklin, Caldwell, Union, Morehouse, West Carroll and Richland Parishes. The battalion provides command and control to plan integrate, and direct execution of three to five assigned engineer companies and one forward support company (FSC) to provide mobility in support application or focused logistics.

The 805th Engineer Aviation Battalion was an "Arms and Services with the Army Air Forces" unit activated on 12 February 1941 at MacDill Field near Tampa, Florida. It was inactivated shortly after World War II.

The 864th Engineer Battalion is a combat engineer battalion of the United States Army based at Joint Base Lewis-McChord, Washington. The battalion is a subordinate unit of 555th Engineer Brigade.

The 878th Engineer Battalion is a subordinate unit of the 648th Maneuver Enhancement Brigade (MEB) of the Georgia Army National Guard and is headquartered in Augusta, GA.

The 168th Engineer Brigade is a Combat Engineer brigade of the United States Army based in Vicksburg, Mississippi. It is a part of the Mississippi Army National Guard.

The 1269th Engineer Combat Battalion was an engineer combat battalion that served in the United States Army in the European Theater of Operations during World War II. It saw action in France and Germany, serving notably with the Army's T-Force intelligence assault force in the capture of German atomic weapons facilities and personnel as part of Operation Big.

An Engineer Combat Battalion (ECB) was a designation for a battalion-strength combat engineering unit in the U.S. Army, most prevalent during World War II. They are a component of the United States Army Corps of Engineers.