Benjamin Walker Ellison was recorded in the June and July 1863 Union Draft Registration as being aged 21 years, living in Oakfield, Kent County, Michigan, Married, and born in England. Benjamin was not drafted until March of 1865.
This record can be viewed at ancestry.com:
Source Citation: National Archives and Records Administration (NARA); Washington, D.C.; Consolidated Lists of Civil War Draft Registration Records (Provost Marshal General’s Bureau; Consolidated Enrollment Lists, 1863-1865); Record Group Number: 110; Title: Records of the Provost Marshal General’s Bureau (Civil War); Consolidated Enrollment Lists, 1863-1865 (Civil War Union Draft Records); ARC Identifies: 4213514; Archive Volume Number: 1 of 3.
Ancestry.com. U.S., Civil War Draft Registrations Records, 1863-1865[database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2010. Original data:Consolidated Lists of Civil War Draft Registrations, 1863-1865. NM-65, entry 172, 620 volumes. Records of the Provost Marshal General’s Bureau (Civil War), Record Group 110. National Archives, Washington D.C.