The ship anchor and oars are the coat of arms from 9E's original parent unit, the 2nd Battalion Mounted Engineers.

They were organized 21 May 1917 at Camp Newton D. Baker, El Paso, Texas, and redesignated the 9th Engineers (Mounted) in July 1917.

After World War I, the battalion was declared inactive except for A Company, which was transferred to Fort Riley, Kansas to provide engineer support to the Cavalry School.

The platoon leader during a significant portion of that period was 1LT Samuel D. Sturgis, Jr., later to become the Chief of Engineers as a lieutenant general.

It reinforced bridges and improved roads throughout the area and also performed counter-mobility missions such as booby trapping the woods around Galhausen and laying a minefield in the vicinity of Lierneaux.

On 7 March 1945, during Operation Lumberjack, to clear the area west of the Rhine of German troops, Combat Command B of the 9th Armored Division arrived at the town of Remagen.

C Co also created and mounted a sign on the tower alongside the western approach announcing,"CROSS THE RHINE WITH DRY FEET COURTESY OF 9TH ARMD DIV."

When the smoke cleared, the 9th Armored Engineers had been instrumental in establishing the first bridgehead across the Rhine River since the Napoleonic Campaigns.

For much of this time, it was in direct support to the German Army's 12th Panzer Division (since inactivated) until its deployment in the Persian Gulf War.

In 1991, under the command of Lieutenant Colonel Richard Jemiola, the 9th Engineers were organized in direct support of the 1st Infantry Division for operations in the Persian Gulf War.

The battalion provided Engineer Support, supervising former warring factions (FWF) in the clearance, proofing, and marking of minefields.

The battalion was replaced by elements of the 82nd Engineers out of Bamberg, Germany, (Blue Babes) and returned to Ledward Barracks in Schweinfurt in April 1997.

Missions conducted included route reconnaissance, unexploded ordnance (UXO) reconnaissance, bunker busting, bunker building, checkpoint operations, obstacle construction, rebuilding an elementary school, and securing Pristina Airfield for President Bill Clinton's first visit to Kosovo.

In August and September 2003, Alpha Company deployed to Bosnia in support of Task Force 1–18's Dynamic Response Exercise.

The battalion was based at FOB Kalsu, supporting the Brigade throughout the five provinces in its Area of Operations (Wasit, Babil, Karbala, Najaf, and Qadisiah).

On 1 January 2009 Soldiers in Iraq started operating under new rules in compliance with the newly minted U.S.–Iraq Status of Forces Agreement.

The most significant policy shift affected troops on the ground by putting Iraqi forces in the operational lead in most areas.

One highlight of the Apache construction effort was exemplified by the edification of a primary road utilized by millions of Iraqis during a pilgrimage to Karbala, Iraq to recognize the holy day of Ashura.

[9] Bravo Company, 9th Engineer Battalion was assigned to TF 3-66 AR (Black Knights) during the OIF 08–10 deployment in Diyala Governorate.

From January to October 2009, Bravo Co executed 253 route clearance missions covering 29,800 km of roads, finding 68 IEDs and striking 20.

The company oversaw the construction of several COPs which included the addition of T-Walls, urine soak pits, burn latrines, and personal hygiene stands.

It is presented annually to the one active and one reserve component engineer company judged to be the Army's best during the award year.

HHC was augmented by a platoon from the 554th Military Police Company who were the main effort in the training of AUP and ALP throughout the province.

The RCP platoons also performed construction security, logistical support, and traffic control point missions routinely.

They were known for their ability to move a small team to a remote COP by helicopter, repair significant structural damage to buildings using only materials at hand, and leave within two weeks.

Two additional platoons from Alpha were detached to assist with the handover of COP Waza Kwah in southwest Paktika to Afghan National Security Forces (ANSF).

While stationed in Gomal, Bravo Company worked with ANSF to increase security, governance, economy, and partnership in the district.

During the deployment, they also received the largest air drop to date in operation Enduring Freedom, accepting a 4K all-terrain forklift.

In Wardak, Charlie Company augmented an Afghan Army Kandak and TF Warrior in a clear-hold-build operation to secure the Chak District Center.

Co-located with an Afghan Army Kandak, Charlie conducted partnered counterinsurgency operations in Andar, Dih Yak, and Giro Districts.