Along with many local men, he served in Company A of the 118th Illinois Infantry.  From the Muster and Descriptive Rolls compiled by the Illinois Adjutant General's Office:

Name   FISCUS, NICHOLAS C
Rank   PVT   Company A  Unit  118 IL US INF

Personal Characteristics
Residence   FOUNTAIN GREEN, HANCOCK CO, IL
Age 24   Height 5' 10"   Hair BROWN   Eyes BLUE   Complexion FAIR
Marital Status   SINGLE   Occupation   FARMER   Nativity   MORRIS CO, NJ
[Clearly an error.]
Service Record
Joined When   AUG 15, 1862   Joined Where   FOUNTAIN GREEN, IL
Joined By Whom   T J CAMPBELL   Period   3 YRS
Muster In   NOV 7, 1862   Muster In Where   CAMP BUTLER, IL
Muster In By Whom   N/A   Muster Out   OCT 1, 1865
Muster Out Where   BATON ROUGE, LA   Muster Out By Whom   LT SCHRYVER
Remarks   N/A

Chambers returned home.  On February 20, 1867, he married Sarah C. Riley, daughter of William Riley, then deceased, and Mary Ann Myres, from Pennsylvania and Maryland, respectively.  Sarah was born in Maryland about 1850.

Chambers and Sarah became the parents of two daughters in quick succession and soon thereafter relocated to Canville Township, Neosho County, Kansas.  A third daughter was born in Kansas. Like his elder brother, Chambers was a teacher.

After fortunately surviving over three years service during the bitter war, Chambers was not to enjoy a long life of health and happiness.

Sarah died on September 14, 1877; we have not determined where she died.  Not quite two years later Chambers was gone, a victim of consumption.  He died in his father's home in January of 1879 according to the Mortality Schedule prepared in conjunction with the 1880 Federal Census.  We do not know where Sarah and Chambers were buried.

The Fiscus daughters were:

i.	Hattie M. Fiscus, born about 1867 in Illinois, probably Fountain Green Township.  She died October 20, 1888, in California, apparently near San Jose.  Her remains lie in an unmarked grave at Oak Hill Memorial Park, San Jose. When Hattie married in 1883, Jacob Patton was listed as her guardian.
ii.	Lucy D. Fiscus, born about 1869, probably in Fountain Green Township.  The death of one Lucy Fiscus was reported in The LaHarper published March 18, 1887.  We would expect to find Lucy buried near her father.
iii.	Cora Fiscus, born about 1872 in Kansas, died in 1952, burial at Beulah Cemetery, Colby, Thomas County, Kansas. In 1880 Cora was listed as the adopted daughter of above mentioned Jacob Patton (ca. 1844-1895) and his wife, the former Frances Caroline McLane, residents of LaHarpe Township, Hancock County.  Jacob's family had been counted in Pike Township, Brown County, Ohio, in 1860, the same area the Fiscus family had called home before coming to Illinois.  In 1900 the widowed Frances Patton was living next to Cora and her family in Colby, Kansas.

Household of William Fiscus
Males 0 thru 4 - 2
Males 20 thru 29 - 1
Females 0 thru 4 - 1
Females 5 thru 9 - 2
Females 20 thru 29 - 1
Total - 7
Persons employed in manufacture and trade - 1

William Fiscus, 37, male, value of personal estate 100, born OH
Jane, 38, female, born PA, could not read or write
Mary, 15, female, born OH
Thomas L H, 14, male, born OH
Chambers, 11, male, born OH

William Riley, 24, male, day laborer, born PA
Mary A Riley, 24, female, born MD
John H Riley, 1, male, born MD
Sarah C Riley, 6/12, female, born MD

William Frisby, 47, male, farmer, value of real estate 600, value of personal estate 600, born OH
Jane, 48, female, born PA
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Mary Frisby, 23, female, born OH
N C Frisby, 22, male, farmer, born OH

William Riley, 35, male, farmer, value of real estate 600, value of personal estate 300, born PA
Mary A, 35, female, born MD
John H, 11, male, born MD, attended school within the year
Sarah C, 10, female, born MD, attended school within the year
William Luther, 9, male, born MD, attended school within the year
Mary E, 6, female, born MD, attended school within the year

Fiscus, Chambers, 30, male, white, school teacher, value of personal estate 100, born OH, male, citizen of the U.S. aged 21 or more
Sarah, 20, female, white, keeping house, born MD
Hattie M, 2, female, white, born IL
Lucy D, 1, female, white, born IL