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155th Infantry Regiment
Coat of Arms
Active June 1799-
Country United States
Branch Mississippi Army National Guard
Nickname(s) Mississippi Rifles (Special Designation)[1]
Motto(s) Stand Fast
Engagements War of 1812
Mexican–American War
Civil War
Spanish-American War
Punitive Expedition
World War I
World War II
Iraq Campaign
Andrew Jackson
Jefferson Davis
Distinctive Unit Insignia 155 Infantry Regiment DUI.png

The "Mississippi Rifles"[1] or the 155th Infantry Regiment, is Mississippi's oldest National Guard unit. Its history predates statehood, back to June 1799, and it is the seventh oldest infantry regiment in the United States Army. They patrolled the frontiers of the Mississippi Territory, captured Aaron Burr, defended Fort Mims during the Indian Wars, and served under General Andrew Jackson in the Battle of New Orleans in the War of 1812.


The 155th Infantry is one of only nineteen Army National Guard units with campaign credit for the War of 1812, and the only one from a state west of the Appalachians. It has credit for the Florida (1814) and New Orleans Campaigns.

They were known as the "Mississippi Rifles" under the command of Colonel Jefferson Davis in the war with Mexico. They acquired this nickname because the regiment was the first in American history to have an official issue rifled musket (M1841 Mississippi Rifle) instead of a smoothbore musket. It was at the Battle of Buena Vista when other American units began to be overrun by the Mexicans that Col. Davis gave the now-famous order, "Stand fast, Mississippians!" The regiment stood their ground and the battle was eventually won. Davis' order later became the regimental motto.

Unlike the standard US Army uniform, the Regiment was outfitted in red shirts, white duck trousers, and black slouch hats.[2] The unit was instrumental in capturing Monterey, and mustered for service in the Spanish-American War.

World War I and World War II[]

The Mississippi Rifles went with General Pershing's "Punitive Expedition" in Mexico and fought against Pancho Villa in 1916. In World War I under the Army's new federalization system, they were designated the 155th Infantry Regiment and fought with the 39th Division. In World War II the regiment fought with the 31st Infantry Division in the Pacific Theater. They conducted training for Korea and many members went forward to fight. During the 1950s all but the 1st Battalion were deactivated.


First Bn (Combined Arms), 155th Infantry (Mechanized) is now a part of the 155th Heavy Brigade Combat Team, Mississippi Army National Guard. The unit has seen recent action in Bosnia as "Task Force Rifles" and in Iraq in 2005–2006 and again in 2009–2010. The Battalion is headquartered in McComb, MS and has Infantry companies in Biloxi, MS (A Co), Poplarville, MS (B Co), as well as Armor companies in Natchez, MS (C Co), Kiln, MS (D Co) and an engineer company in Columbia, MS (E Co).

See also[]


  1. 1.0 1.1 "Special Designation Listing". United States Army Center of Military History. 21 April 2010. Archived from the original on 9 June 2010. Retrieved 14 July 2010. 
  2. p.12 Patterson, Gerald A. From Blue to Grey: The Life of General Cadmus M. Wilcox 2001 Stackpole Books

External links[]

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