Patterson ' s Independent Company Kentucky Volunteer Engineers Patterson ' s Independent Company Kentucky Volunteer Engineers was an engineer regiment that served in the Union Army during the American Civil War . Service . Patterson ' s Company was organized at Camp Haskin near Somerset , Kentucky and mustered into service on September 25 , 1861 under the command of Captain William F . Patterson . The regiment served unattached , Army of the Ohio , to March 1862 . Engineers , 7th Division , Army of the Ohio , to October 1862 . Cumberland Division , District of West Virginia , Department of the Ohio , to November 1862 . 9th Division , Right Wing , XIII Corps ( Old ) , Department of the Tennessee , to December 1862 . Unattached , Sherman ' s Yazoo Expedition , to January 1863 . Unattached , 9th Division , XIII Corps , to July 1863 . Unattached , XIII Corps , Army of the Tennessee and Department of the Gulf , to October 1863 . Unattached , XIII Corps , Texas , to July 1864 . Engineer Brigade , Department of the Gulf , to January 1865 . Patterson ' s Company mustered out of service at Louisville , Kentucky on January 22 , 1865 . Detailed service . Constructed defenses for Camp Haskins and Somerset , Ky . , until January 1862 . Action at Mill Springs , Ky . , January 19 . Repair roads from Somerset to Stanford , Ky . , until April 12 . Moved to Cumberland Ford April 2 – 20 , repairing roads en route . Cumberland Gap Campaign May 1 - June 18 . Occupation of Cumberland Gap June 18 - September 17 . Retreat to Greenup on the Ohio River September 17 - October 3 . Expedition to Charleston , Va . , October 21 - November 10 . Moved to Memphis , Tenn . , November 10 – 15 . At Memphis , Tenn . , until December 20 . Sherman ' s Yazoo Expedition December 20 , 1862 to January 3 , 1863 . Chickasaw Bayou December 26 – 28 . Chickasaw Bluff December 29 . Expedition to Arkansas Post , Ark . , January 3 – 10 , 1863 . Assault and capture Fort Hindman , Arkansas Post , January 10 – 11 . Moved to Young ' s Point , La . , January 14 – 22 , and engineer duty there until March 30 . Moved to Richmond , La . , March 30 . Built floating bridge across Bayou Roundaway April 1 . Movement on Bruinsburg and turning Grand Gulf April 25 – 30 . Battle of Port Gibson May 1 . Took advance of Logan ' s 3rd Division , XVII Corps , and built bridge over Bayou Pierre May 2 – 3 . Battles of Raymond May 12 ; Champion Hill May 16 ; Big Black River May 27 . Siege of Vicksburg May 18 - July 4 . Assaults on Vicksburg May 19 and 22 . Advance on Jackson , Miss . , July 4 – 10 . Siege of Jackson July 10 – 17 . Moved to New Orleans August 5 – 27 , and duty there until October 5 . Western Louisiana Campaign October 5 - November 1 . Vermillion Bayou October 3 and 10 . Moved to New Orleans November 1 , thence to Brazos , Santiago , Texas , November 15 – 20 , and to Arkansas Pass November 21 . Advance up coast to Pass Cavallo November 22 - December 7 . Constructed bridge 300 yards long across Cedar Bayou on November 25 . At Pass Cavallo until April 19 , 1864 , building hospitals , signal stations , warehouses and wharves . Moved to Alexandria , La . , April 19 – 29 . Construction of dam at Alexandria April 29 - May 10 . Retreat to Morganza May 13 – 20 . Mansura May 16 . Yellow Bayou May 18 – 19 . Moved to New Orleans , La . , June 1 , and reported to Engineer Department July 3 . Engaged in working lumber in Cypress Swamp until November 7 . Ordered to New Orleans , thence moved to Louisville , Ky . , November 23 - December 1 . Casualties . The regiment lost a total of 8 men during service , all due to disease .