A scouting party of Confederate soldiers was camped on the farm in NW Missouri. Two friends, John H (and his friend) were both harassing the confederate party and just got too close. They were captured and the Confederates, who were short of men, took John H and his friend to the Confederate induction point in Springfield Missouri where they were both sworn into the Confederate army. From there the regiment was captured 3 times by the Union army during the war. Each time the unit was released with the promise that the soldiers would not fight anymore or reengage the Union Army. By the end of the war, John H ended up in a hospital in Pensacola Florida. Once the war over (April/May 1865) he was released from the hospital and he hiked back (1000 miles), on foot, from Pensacola Florida to Worth County, Missouri. It would have taken at least a month to walk home. 
He was active in the engagements at Luka and Corinth. Later he was assigned to Bowen's Brigade, Department of Mississippi and East Louisiana. The 3rd fought in various conflicts during the Vicksburg siege and was captured on July 4, 1863. Exchanged and assigned to General Cockrell's Brigade, it was consolidated with the 5th Regiment. This command participated in the Atlanta Campaign, endured Hood's winter operations in Tennessee, then aided in the defense of Mobile, Alabama.
John Willhoite (1745 - 1837) and His Descendants in Kentucky and Elsewhere. Stroudsburg, VA: Earl and Leona Willhoite
Wilhite/Wilhoit & Allied Descendants of Johann Michael and Anna Maria (Hengsteler) Wilheit 1671-1994 Compiled by Mary F. Mickey
"United States Census, 1850," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MDZW-X8S : accessed 4 January 2015), John Willhirt in household of Simson Willhoit, Liberty, Clay, Missouri, United States; citing family 265, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M6NV-NQL : accessed 4 January 2015), John Willhite, Greene, Worth, Missouri, United States, 285; citing sheet 428A, film number 0741, NARA microfilm publication T9, National Archives and Records Administration, Washington D.C.; FHL microfilm 1,254,741.
Military Service - 3rd Missouri Infantry  Image 
Company Muster Roll Confederate, 3rd Missouri Infantry: Join for duty Dec 26, 1861 - age 23 in Springfield, Missouri for a term of 1 year; Muster roll in Jan 25, 1862; Muster rolls include: March & April 1862, May & Jun 1862, July & Aug 1862, Sept & Oct 1862, Nov & Dec 1862 (note indicates re-enlisted for war by J.W Bigby June 3rd, 1862), Jan & Feb 1863, Mar & Apr 1863, May & Jun 1863, July & Aug 1863, Sep & Oct 1863, Nov & Dec 1863, Jan & Feb 1864, Mar & Apr 1864, May & Jun 1864, Jul & Aug 1864.
Rolls of Prisoners of War
Captured July 4, 1863, Vicksburg, Mississippi - Paroled at Vicksburg, Mississippi July 9, 1863
Captured October 5, 1864, Allatoona, Georgia by forces under Maj Gen W.T. Sherman - Sent to Camp Douglas, Chicago, Illinois Nov 24, 1864
Captured April 9, 1865 at Blakely, Georgia
1st Mississippi C.S.A Hospital, Jackson, Mississippi - Admitted Aug. 27, 1863; Returned to duty Sept 22, 1863 - Complaint: Febris Typhoidea (Typhoid Fever)
Genealogical Notes from the "Liberty Tribune" 1858-1862, Vol II, June 13, 1862, Final Settlement of estate of Armstead Dawson, in Platte Co., by John H. Wilhite, admr.
Genealogical Notes from the "Liberty Tribune" 1858-1862, Vol II, Aug 25, 1865. John H Wilhite filed in the county clerk's office the "Oath of Loyalty" required under the new constitution.
It may be possible to confirm family relationships with John by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: