Chicago Mercantile Independent Battery Light Artillery Chicago Mercantile Independent Battery Light Artillery was an artillery battery that served in the Union Army during the American Civil War . Service . The battery was organized in Chicago , Illinois and mustered in for a three year enlistment on August 29 , 1862 under the command of Captain Charles G . Cooley . The battery was attached to 5th Division , District of Memphis , Tennessee , XIII Corps , Department of the Tennessee , and to 2nd Division , District of Memphis , Tennessee , XIII Corps , to December 1862 . Artillery , 10th Division , Right Wing , XIII Corps , December 1862 . Artillery , 1st Division , Sherman ' s Yazoo Expedition , to January 1863 . Artillery , 10th Division , XIII Corps , Army of the Tennessee , to August 1863 . Artillery , 4th Division , XIII Corps , Department of the Gulf , to March 1864 . Artillery , 1st Division , XIII Corps , to June 1864 . Defenses of New Orleans , Louisiana , to July 1864 . Artillery Reserve , Department of the Gulf , to November 1864 . Artillery , Cavalry Division , Department of the Gulf , to May 1865 . Defenses of New Orleans , Louisiana , to July 1865 . Chicago Mercantile Independent Battery Light Artillery mustered out of service on July 10 , 1865 in Chicago . Detailed service . Duty at Camp Douglass , near Chicago , Ill . , until November 8 . Moved to Memphis , Tenn . , November 8 – 11 , 1862 . Grant ' s Central Mississippi Campaign November and December 1862 . " Tallahatchie March " November 24 - December 12 . Sherman ' s Yazoo Expedition December 20 , 1862 , to January 2 , 1863 . Chickasaw Bayou December 26 – 28 . Chickasaw Bluff December 29 . Expedition to Arkansas Post , Ark . , January 3 – 10 , 1863 . Assault and capture of Fort Hindman . Arkansas Post , January 10 – 11 . Moved to Young ' s Point , La . , January 17 , and duty there until March , and at Milliken ' s Bend , La . , until April 25 . Movement on Bruinsburg and turning Grand Gulf April 25 – 30 . Battle of Magnolia Hills , or Port Gibson , May 1 . Battle of Champion Hill May 16 . Big Black River Bridge 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 Brashear City . Western Louisiana Campaign October 3 - November 30 . Camp at Franklin until December 19 . Moved to Algiers , La . Expedition to the Rio Grande , Texas , December 26 , 1863 – January 1 , 1864 . At Pass Cavallo , Texas , until March . Ordered to Berwick City , La . Red River Campaign March – April . Battle of Sabine Cross Roads April 8 . Battery cut to pieces and guns captured . Retreat to Alexandria , then to New Orleans , La . , April 9 – 30 . Duty at Camp Parapet , Defenses of New Orleans , until November . Moved to Baton Rouge November 1 . Davidson ' s Expedition against Mobile & Ohio Railroad November 27 - December 13 . Moved to New Orleans December 31 , then to Baton Rouge , and duty there until May 1865 . At New Orleans , La . , until June , then ordered home for muster out . Casualties . The battery lost a total of 18 men during service ; 2 officers and 5 enlisted men killed or mortally wounded , 11 enlisted men died of disease .