1st Engineer Battalion

1st Engineer Battalion
US Army · Public domain · source
Unit name	1st Engineer Battalion
Dates	1846 – present
Country	United States
Branch	United States Army
Type	Combat engineering
Size	Battalion
Command structure	1st Infantry Division
Garrison	Fort Riley, Kansas
Nickname	"The Diehards"
Motto	"Essayons"

1st Engineer Battalion. The 1st Engineer Battalion is a combat engineering unit of the United States Army and the oldest engineer battalion in the U.S. Army. It is currently assigned to the 1st Infantry Division and headquartered at Fort Riley, Kansas. The battalion's long history spans major conflicts from the Mexican–American War through the Global War on Terrorism, earning it the nickname "The Diehards."

History

The battalion was first constituted in 1846 during the Mexican–American War, participating in the Siege of Veracruz and the advance on Mexico City. It later served with distinction in the American Civil War, engaging in campaigns such as the Peninsula Campaign and the Siege of Petersburg. In the 20th century, the unit fought in both World War I and World War II, supporting the 1st Infantry Division in critical battles including the Meuse–Argonne offensive and the Normandy landings. During the Cold War, the battalion was deployed to Vietnam and later saw extensive action in Operation Desert Storm and the Iraq War.

Organization

The battalion is organized under the 1st Infantry Division's 1st Armored Brigade Combat Team. Its structure includes a headquarters and headquarters company, which provides command and control for the entire unit. The line companies consist of several combat engineer companies, such as Alpha, Bravo, and Charlie Companies, each capable of independent field operations. These companies are further broken down into platoons and squads specializing in tasks like mobility, countermobility, and explosive ordnance disposal.

Notable operations

During World War II, the battalion played a crucial role in the D-Day landings on Omaha Beach, clearing obstacles under heavy fire from the Wehrmacht. In the Vietnam War, it conducted extensive operations including Operation Cedar Falls and the Battle of Dak To, building firebases and conducting route clearance. The unit provided essential engineering support during the Gulf War, breaching the formidable Saddam Line fortifications. More recently, it deployed multiple times to Afghanistan in support of Operation Enduring Freedom, engaging in route clearance and construction missions across provinces like Khost and Paktika Province.

Equipment and insignia

The battalion utilizes a variety of specialized vehicles, including the M9 Armored Combat Earthmover, the M113 family of vehicles, and the Assault Breacher Vehicle. For route clearance and improvised explosive device detection, it employs the Buffalo and RG-31 Nyala armored vehicles. The unit's distinctive insignia features a scarlet castle, a traditional symbol of the United States Army Corps of Engineers, set on a white background. The battalion's motto, "Essayons" (French for "Let Us Try"), is shared with the broader Army Corps of Engineers.

Honors and awards

The battalion has been awarded numerous Presidential Unit Citations for extraordinary heroism, including for actions on Omaha Beach and during the Battle of the Bulge. It has also received multiple Valorous Unit Awards for service in conflicts such as the Vietnam War and the Iraq War. The unit streamers include campaign participation credit from the Mexican–American War, the American Civil War, World War I, World War II, the Vietnam War, the Gulf War, and the Global War on Terrorism. Individual soldiers from the battalion have earned high decorations including the Medal of Honor, the Distinguished Service Cross, and the Silver Star.

Category:Engineer battalions of the United States Army Category:1846 establishments in the United States