Support for civilian emergencies

On 20 June 1993 the company was mobilized for state emergency (Flood) duty. While mobilized, the unit served in northeast Missouri for approximately three months maintaining law and order.

After the attacks of 11 September 2001, the 1138th was mobilized as part of Operation Noble Eagle, a military operation providing military support for increased security at potential terrorist targets. The company served on active duty from 1 October 2001 through 21 September 2002, performing law and order duties at Fort Leonard Wood, Missouri.

On 31 August 2005, the company deployed with the 175th MP Bn to Jefferson Parish, Louisiana to support relief operations after Hurricane Katrina. While deployed in Louisiana, the 1138th performed law and order operations and area security missions, returning on 21 September 2005.

In 2009, while preparing for yet another active duty deployment to Iraq, the Ozarks region of rural Missouri was hit by a harsh wave of winter weather and in January, the unit deployed a contingent to aid winter storm victims in Southeast Missouri for Operation January Ice.

Combat support deployments

In December, 1989, the company was called into active service for Operation Just Cause (Panama). It was the first Army National Guard unit to be activated since the Vietnam War. As part of its traditional internment and resettlement mission, the 1138th established a detainee camp at Empire Range, Panama where it handled both civilian and military detainees.

On 15 November 1990, the unit was mobilized and deployed to Saudi Arabia during Operation Desert Storm. It remained in Saudi Arabia for five months guarding prisoners of war.

The 1138th deployed for Operation Enduring Freedom and Operation Iraqi Freedom, serving on active duty from 10 February 2003 through 21 December 2003. Upon arrival in the Middle East, the unit conducted customs, physical security, and law and order missions throughout Kuwait and in Doha, Qatar.

After Operation January Ice concluded in 2009, the company began its preparation for a detainee operations mission in Baghdad, Iraq. While preparing for deployment, nearly fifty 1138th soldiers were transferred to the 1140th MP Co, another Missouri Army National Guard unit preparing to deploy to Afghanistan. The 1138th backfilled its ranks with "In-Lieu-Of" military policemen from twenty-three other Missouri Army National Guard units. On 21 May 2009, the unit reported to Camp Clark, Missouri for pre-mobilization training. The unit then reported for post-mobilization Training at Fort Bliss, Texas and after completing a twenty-day-long mission evaluation exercise, deployed to Iraq, to support Operation Iraqi Freedom 09-10.

The 1138th Military Police Company at West Plains was inactivated in January 2019 and replaced by the 1142nd Engineer Company of the 1140th Engineer Battalion, activated in September of that year.^[1][2]