By: History.com Editors

1779

Congress establishes the U.S. Army Corps of Engineers

Published: November 13, 2009

Last Updated: January 25, 2025

On March 11, 1779, Congress establishes the U.S. Army Corps of Engineers to help plan, design and prepare environmental and structural facilities for the U.S. Army. Made up of civilian workers, members of the Continental Army and French officers, the U.S. Army Corps of Engineers played an essential role in the critical Revolutionary War battles at Bunker Hill, Saratoga and Yorktown.

The members of the Corps who had joined at the time of its founding in 1779 left the army with their fellow veterans at the end of the War for Independence. In 1794, Congress created a Corps of Artillerists and Engineers to serve the same purpose under the new federal government. The Corps of Engineers itself was reestablished as an enduring division of the federal government in 1802.

Upon its reestablishment, the Corps began its chief task of creating and maintaining military fortifications. These responsibilities increased in urgency as the new United States prepared for a second war with Britain in the years before 1812. The Corps’ greatest contribution during this era was to the defense of New York Harbor—the fortifications it built not only persuaded British naval commanders to stay away from the city during the War of 1812, but later served as the foundations for the Statue of Liberty.

In subsequent years, the U.S. Army Corps of Engineers evolved from providing services for the military to helping map out the uncharted territories that would become the western United States. Beginning in 1824, the Corps also took responsibility for navigation and flood control of the nation’s river systems.

Today, the U. S. Army Corps of Engineers is made up of more than 35,000 civilian and enlisted men and women. In recent years, the Corps has worked on rebuilding projects in Afghanistan and Iraq, as well as the reconstruction of the city of New Orleans in the wake of Hurricane Katrina.

Timeline

Also on This Day in History

Discover more of the major events, famous births, notable deaths and everything else history-making that happened on March 11th

About the author

HISTORY.com works with a wide range of writers and editors to create accurate and informative content. All articles are regularly reviewed and updated by the HISTORY.com team. Articles with the “HISTORY.com Editors” byline have been written or edited by the HISTORY.com editors, including Amanda Onion, Missy Sullivan, Matt Mullen and Christian Zapata.

Fact Check

We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

Citation Information

Article title
Congress establishes the U.S. Army Corps of Engineers
Website Name
History
Date Accessed
March 25, 2025
Publisher
A&E Television Networks
Last Updated
January 25, 2025
Original Published Date
November 13, 2009

History Every Day

Sign Up for "This Day in History"

Uncover fascinating moments from the past every day! Learn something new with key events in history, from the American Revolution to pop culture, crime and more.

By submitting your information, you agree to receive emails from HISTORY and A+E Global Media. You can opt out at any time. You must be 16 years or older and a resident of the United States.