Rowland's company of the Cass County Home Guards (aka Nugent's or Newgent's regiment) was commanded by Captain Edward H. Hill and was one of four companies raised in Kansas but which served in Nugent's Missouri regiment--my research has yet to disclose why. A story in the January 1862 Leavenworth Daily Times said the four companies had been mostly recruited in Linn and Lykins [Miami] counties, Kansas under an authorization from Fremont for 3 to 6 months service on the border. The following is taken from the official regimental history of the Second Kansas Cavalry; the Ninth regiment mentioned was later re-named the Second Kansas Cavalry. <http://skyways.lib.ks.us/museums/kng/2ksvls.html>

"On the 26th of December, to the five squadrons as above organized, the Governor attached four companies of Nugent's Regiment of Missouri Home Guards, as follows: F. company, Capt. A. Thomas; G company, Captain C. Lovejoy; H company, Captain B. F. Simpson, and I company, Captain C. [sic] Hill. (These four companies were organized in the fall of 1861, in the [Kansas] counties of Douglas, Johnson, and Miami, under command of Lieutenant Colonel William [sic]Mewhinney, of Douglas county, and attached themselves temporarily to Nugent's regiment. They were raised for home service, and were consequently disbanded on the 4th of February, 1862), and the organization then consisting of nine companies, was designated by order of the Governor the Ninth Kansas Volunteers.
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"In obedience to orders from Department Head Quarters, the Ninth moved from Fort Leavenworth on the 20th of January to Quindaro, in Wyandotte county, for the purpose of finding quarters suitable for protection from the inclement weather.

"On the 4th of February, companies F, G, H and I were, by order of Major General Halleck, commanding Department of Mississippi, mustered out of the service, for the reason that their organization was irregular..."