| 9th Engineer Battalion | |
|---|---|
&sq=&lang=&file=File:9EngrBnCOA.jpg) 9th Engineer Battalion coat of arms | |
| Active | 1917–1945 1952–1991 1996–2013 2015–present |
| Country |  United States |
| Branch | US Army Corps of Engineers |
| Type | Brigade Engineer Battalion (BEB) |
| Garrison/HQ | Fort Stewart, GA |
| Nickname(s) | Gilas; 9E |
| Motto(s) | "Asistiremos" (Spanish: We will assist); "First to Cross!" |
| Anniversaries | Crossing of the Ludendorff Bridge 7 March 1945 |
| Insignia | |
| Distinctive Unit Insignia | &sq=&lang=&file=File:9_Eng_Bn_DUI.jpg) |
The 9th 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 three line companies and a headquarters company. Its mission is to provide assured mobility, counter-mobility, general engineering, and survivability support, with well trained sappers (combat engineers) ready to deploy anywhere at any time. The unit's history spans service in 1917 in the US southwest, World War II in France and Germany, multiple deployments to the Balkans, and multiple deployments in support of the global war on terrorism in Iraq and Afghanistan. It is most famous for the capture of the Ludendorff Bridge across the Rhine River. As of 18 May 2015, the battalion exists as the 9th Brigade Engineer Battalion (9th BEB) in Fort Stewart, GA under 2nd Armored Brigade Combat Team, 3rd Infantry Division.