7th Regiment Kansas Volunteer Cavalry The 7th Kansas Volunteer Cavalry Regiment ( also known as " Jennison ' s Jayhawkers " ) was a cavalry regiment that served in the Union Army during the American Civil War . Service . The 7th Kansas Cavalry was organized at Fort Leavenworth , Kansas on October 28 , 1861 . It mustered in for three years under the command of Colonel Charles R . Jennison . The regiment was attached to Department of Kansas to June 1862 . 5th Division , Army of the Mississippi , to September 1862 . 2nd Brigade , Cavalry Division , Army of the Mississippi , to November 1862 . 1st Brigade , Cavalry Division , XIII Corps , Department of the Tennessee , to December 1862 . 2nd Brigade , Cavalry Division , XVI Corps , Army of the Tennessee , to March 1863 . Cavalry Brigade , District of Corinth , 2nd Division , XVI Corps , to June 1863 . 3rd Brigade , 1st Cavalry Division , XVI Army Corps , to August 1863 . 1st Brigade , 1st Cavalry Division , XVI Corps , to February 1864 . Unattached , 1st Cavalry Division , XVI Corps , to June 1864 . 1st Brigade , 1st Cavalry Division , District of West Tennessee , to September 1864 . District of St . Louis , Missouri , Department of Missouri , to July 1865 . Department of Kansas to September 1865 . The 7th Kansas Cavalry mustered out of service at Fort Leavenworth on September 29 , 1865 . Detailed service . Duty in western Missouri until January 31 , 1862 . Spring Hill , Mo . , October 21 , 1861 ( 1 company ) . Little Blue November 11 , 1861 ( Companies A , B , and H ) . Little Santa Fe November 20 . Independence , Little Blue , November 20 ( detachment ) . Columbus , Mo . , January 9 , 1862 . Moved to Humboldt , Kansas , January 31 , and duty there until March 25 . Moved to Fort Leavenworth , Kansas , March 25 ; thence to Columbus , Ky . , May 18 - June 2 , and to Corinth , Miss . , June 7 , escorting working parties on Mobile & Ohio Railroad and arriving at Corinth July 10 ; thence moved to Jacinto and Rienzi , Miss . , July 18 – 28 . Expedition from Rienzi to Ripley , Miss . , July 27 – 29 . Reconnaissance to Jacinto and Bay Springs and skirmish August 4 – 7 . Reconnaissance from Rienzi to Hay Springs August 18 – 21 . Marietta and Bay Springs August 20 . Kossuth August 27 . Rienzi September 9 and 18 . Battle of Iuka , Miss . , September 19 ( Companies B and E ) . Ruckersville October 1 ( detachment ) . Baldwin October 2 . Battle of Corinth October 3 – 4 . Pursuit to Ripley October 5 – 12 . Ruckersville October 6 . Grant ' s Central Mississippi Campaign October 31 , 1862 to January 10 , 1863 . Capture of Ripley November 2 , 1862 . Orizaba November 3 . Jumpertown November 5 . Reconnaissance from LaGrange November 8 – 9 . Lamar and Coldwater November 8 . Holly Springs November 13 , 28 and 29 . Waterford or Lumpkin ' s Mill November 26 – 30 . About Oxford December 1 – 3 . Tallahatchie December 2 . Water Valley December 4 . Coffeeville December 5 . Moved to Moscow , Tenn . , December 31 , and duty on line of Memphis & Charleston Railroad at Germantown , Tenn . , until April 14 , 1863 . Joinerville January 3 , 1863 . Near Germantown January 27 . Near Yorkville January 28 ( 1 company ) . Tuscumbia , Ala . , February 22 . Expedition to Colliersville and to LaFayette and Moscow March 8 – 16 . Lafayette Depot March 15 . Moscow March 16 . Germantown April 1 . Scout in Beaver Creek Swamp April 2 – 6 . Moved to Corinth April 14 – 17 . Dodge ' s Expedition into northern Alabama April 15 - May 8 . Hock Cut , near Tuscumbia , April 22 . Tuscumbia , Dickson Station and Leighton April 23 . Town Creek April 27 . Expedition from Burnsville to Tupelo , Miss . , May 2 – 8 . Tupelo May 5 . At Corinth , Miss . , May 8 , 1863 , to January 8 , 1864 . Expedition to Florence May 26 – 31 , 1863 . Florence May 28 . Hamburg Landing May 30 . Iuka , Miss . , July 9 and 14 . Near Corinth August 16 . Expedition into western Tennessee August 27 - October 1 . Swallow Bluff September 30 ( Companies A and C ) . Operations in northern Mississippi and western Tennessee against Chalmers October 4 – 17 . Ingraham ' s Mills , near Byhalia , October 12 . Wyatts , Tallahatchie River , October 13 . Operations on Memphis & Charleston Railroad November 3 – 5 . Operations on Memphis & Charleston Railroad against Lee ' s attack November 28 - December 10 . Molino November 28 . Ripley December 1 and 4 . Jack ' s Creek December 24 . Moved to Memphis , Tenn . , January 18 , 1864 . Veterans on furlough February 4 - March 4 ; then moved to St . Louis , Mo . , March 12 . Moved to Memphis June 6 . Near Memphis May 2 ( detachment ) . LaFayette June 9 . Smith ' s Expedition to Tupelo , Miss . , July 5 – 18 . King ' s Creek July 9 . Pontotoc July 11 – 12 . Tupelo July 13 – 14 . Oldtown Creek July 15 . Ellistown July 16 . Tupelo July 25 . Smith ' s Expedition to Oxford , Miss . , August 1 – 30 . Tallahatchie River August 7 – 9 . Hurricane Creek , Oxford , August 9 . Hurricane Creek August 13 , 14 , 16 and 19 . Moved to St . Louis , Mo . , arriving September 17 . Pursuit of Price through Missouri September 30 - November 26 . Little Blue October 21 . Independence October 22 . Big Blue and State Line , Westport , October 23 . Mine Creek , Little Osage River , October 25 . Duty by detachments in St . Louis District until July 18 , 1865 . Moselle Bridge , near Franklin , December 7 , 1864 ( Company E ) . Expedition from Bloomfield into Dunklin County March 3 – 7 , 1865 . Skirmishes near Bloomfield March 3 and 7 . Dunklin County March 4 . Skirmish McKinzie ' s Creek , near Patterson , April 15 , Ordered to Omaha , Neb . , July 18 ; thence to Fort Kearney and duty there until September . Moved to Fort Leavenworth , Kansas , arriving September 14 . Casualties . The regiment lost a total of 223 men during service ; 3 officers and 55 enlisted men killed or mortally wounded , 1 officer and 164 enlisted men died of disease .