Battery A , 1st Missouri Light Artillery Battery A , 1st Missouri Light Artillery was an artillery battery that served in the Union Army during the American Civil War . Service . The regiment and its batteries were organized at St . Louis , Missouri from the 1st Missouri Infantry and mustered in for a three year enlistment on September 1 , 1861 under the command of Captain George W . Schofield . The battery was attached to Department of the Missouri , to January 1862 . 2nd Brigade , Army of Southeast Missouri , to March 1862 . Steele ' s Command , Army of Southeast Missouri , to May 1862 . Artillery , 1st Division , Army of Southwest Missouri , to July 1862 . District of Eastern Arkansas , Department of the Missouri , to October 1862 . District of Southeast Missouri , Department of the Missouri , to January 1863 . Artillery , 13th Division , XIII Corps , Department of the Tennessee , to March 1863 . Artillery , 12th Division , XIII Corps , to July 1863 . Artillery , 3rd Division , XIII Corps , Department of the Tennessee , to August 1863 , and Department of the Gulf to July 1864 . Defenses of New Orleans , Louisiana , Department of the Gulf , to August 1864 . Reserve Artillery , Department of the Gulf , to April 1865 . Hawkins ' Colored Division , Military Division West Mississippi , to June 1865 . Department of Alabama to August 1865 . Battery A , 1st Missouri Light Artillery mustered out of service August 23 , 1865 . Detailed service . Operations about Ironton and Fredericktown , Mo . , October 12 – 21 , 1861 . Engagement at Fredericktown - Ironton February 21 . Duty in southeast Missouri until March 1862 . Ordered to Pilot Knob , then marched to Reeve ' s Station March 23 – 27 . Moved to Pocahontas , Ark . , April 5 – 11 , then to Jacksonport May 3 , and to Batesville March 24 . March to Augusta June 20 - July 4 , then to Clarksville and Helena , Ark . , July 5 – 14 . Action at Hill ' s Plantation , Cache River , July 7 . Duty at Helena , Ark , to October 3 . Moved to Pilot Knob , Mo . , October 3 . Operations in southeast Missouri until December . Moved to St . Louis , Mo . , then to Columbus , Ky . , December 19 – 25 , and to Helena , Ark . , January 5 – 7 , 1863 . Expedition to Duvall ' s Bluff , Ark . , January 16 – 20 . Expedition to Yazoo Pass , and operations against Fort Pemberton and Greenwood February 24 - April 8 . Moved to Milliken ' s Bend . La . , April 14 . Movement on Bruinsburg and turning Grand Gulf April 25 – 30 . Battle of Thompson ' s Hill , Port Gibson , Miss . , May 1 . Fourteen Mile Creek May 12 . Battle of Champion Hill May 16 . Big Black River May 17 . Siege of Vicksburg , Miss . , May 18 - July 4 . Assaults on Vicksburg May 19 and 22 . Advance on Jackson , Miss . , July 5 – 10 . Siege of Jackson July 10 – 17 . Ordered to New Orleans , La . , August 6 , then to Carrollton , and duty there until October . Western Louisiana Campaign October 3 - November 30 . Bayou Cortableaux October 21 . Carrion Crow Bayou November 3 . At New Iberia until December 17 . Moved to New Orleans , then to Madisonville January 7 , 1864 . Red River Campaign May 2 – 20 . Moved to Alexandria , La . , May 2 . Attached to Army of the West and Department of the Missouri . Retreat to Morganza May 13 – 20 . Expedition from Morganza to the Atchafalaya River May 30 - June 6 . Moved to Carrollton June . Duty there and in the defenses of New Orleans until April 1865 . Ordered from Greenville , La . , to Mobile , Ala . , April 19 . Duty there and in Department of Alabama until August .